Annual report pursuant to Section 13 and 15(d)

Schedule III Combined Real Estate and Accumulated Depreciation (Detail)

v3.22.0.1
Schedule III Combined Real Estate and Accumulated Depreciation (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Encumbrance $ 37,030      
Initial Cost to Company, Land 1,171,403      
Initial Cost to Company, Building, Equipment and Improvements 5,109,220      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 809,834      
Gross Amount at Which Carried at Close of Period, Land 1,185,976      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 5,904,481      
Gross Amount at Which Carried at Close of Period, Total 7,090,457 $ 5,330,323 $ 4,749,473 $ 4,398,939
Accumulated Depreciation 1,007,650 $ 873,178 $ 756,333 $ 704,681
Construction in Progress [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Initial Cost to Company, Land      
Initial Cost to Company, Building, Equipment and Improvements      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 44,592      
Gross Amount at Which Carried at Close of Period, Land      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 44,592      
Gross Amount at Which Carried at Close of Period, Total 44,592      
Accumulated Depreciation      
Date of Construction 2021      
Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
West Hartford New Park Ave [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST CT      
Initial Cost to Company, Land $ 1,892      
Initial Cost to Company, Building, Equipment and Improvements 12,111      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 4      
Gross Amount at Which Carried at Close of Period, Land 1,892      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 12,115      
Gross Amount at Which Carried at Close of Period, Total 14,007      
Accumulated Depreciation      
Date of Construction 2008      
Date Acquired Dec. 28, 2021      
West Hartford New Park Ave [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
West Hartford New Park Ave [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Plainville [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST CT      
Initial Cost to Company, Land $ 2,166      
Initial Cost to Company, Building, Equipment and Improvements 10,137      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 4      
Gross Amount at Which Carried at Close of Period, Land 2,166      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 10,141      
Gross Amount at Which Carried at Close of Period, Total 12,307      
Accumulated Depreciation      
Date of Construction 2006      
Date Acquired Dec. 28, 2021      
Plainville [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Plainville [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Glastonbury [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST CT      
Initial Cost to Company, Land $ 1,556      
Initial Cost to Company, Building, Equipment and Improvements 9,575      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 4      
Gross Amount at Which Carried at Close of Period, Land 1,556      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 9,579      
Gross Amount at Which Carried at Close of Period, Total 11,135      
Accumulated Depreciation      
Date of Construction 2006      
Date Acquired Dec. 28, 2021      
Glastonbury [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Glastonbury [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Meriden [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST CT      
Initial Cost to Company, Land $ 1,123      
Initial Cost to Company, Building, Equipment and Improvements 9,205      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 4      
Gross Amount at Which Carried at Close of Period, Land 1,123      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 9,209      
Gross Amount at Which Carried at Close of Period, Total 10,332      
Accumulated Depreciation      
Date of Construction 2008      
Date Acquired Dec. 28, 2021      
Meriden [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Meriden [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Milford [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST CT      
Initial Cost to Company, Land $ 2,613      
Initial Cost to Company, Building, Equipment and Improvements 16,328      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 4      
Gross Amount at Which Carried at Close of Period, Land 2,613      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 16,332      
Gross Amount at Which Carried at Close of Period, Total 18,945      
Accumulated Depreciation      
Date of Construction 2018      
Date Acquired Dec. 28, 2021      
Milford [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Milford [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Southington [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST CT      
Initial Cost to Company, Land $ 1,111      
Initial Cost to Company, Building, Equipment and Improvements 7,913      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 3      
Gross Amount at Which Carried at Close of Period, Land 1,111      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 7,916      
Gross Amount at Which Carried at Close of Period, Total 9,027      
Accumulated Depreciation      
Date of Construction 2019      
Date Acquired Dec. 28, 2021      
Southington [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Southington [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Palmetto 96th St E [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST FL      
Initial Cost to Company, Land $ 737      
Initial Cost to Company, Building, Equipment and Improvements 19,623      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 30      
Gross Amount at Which Carried at Close of Period, Land 737      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 19,653      
Gross Amount at Which Carried at Close of Period, Total 20,390      
Accumulated Depreciation $ 3      
Date of Construction 2020      
Date Acquired Dec. 20, 2021      
Palmetto 96th St E [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Palmetto 96th St E [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Loveland [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST CO      
Initial Cost to Company, Land $ 1,074      
Initial Cost to Company, Building, Equipment and Improvements 15,781      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 4      
Gross Amount at Which Carried at Close of Period, Land 1,074      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 15,785      
Gross Amount at Which Carried at Close of Period, Total 16,859      
Accumulated Depreciation      
Date of Construction 2017      
Date Acquired Dec. 16, 2021      
Loveland [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Loveland [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Broomfield [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST CO      
Initial Cost to Company, Land $ 2,652      
Initial Cost to Company, Building, Equipment and Improvements 13,159      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 54      
Gross Amount at Which Carried at Close of Period, Land 2,652      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 13,213      
Gross Amount at Which Carried at Close of Period, Total 15,865      
Accumulated Depreciation      
Date of Construction 2017      
Date Acquired Dec. 16, 2021      
Broomfield [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Broomfield [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Sanford W SR 46 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST FL      
Initial Cost to Company, Land $ 2,989      
Initial Cost to Company, Building, Equipment and Improvements 10,924      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 4      
Gross Amount at Which Carried at Close of Period, Land 2,989      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 10,928      
Gross Amount at Which Carried at Close of Period, Total 13,917      
Accumulated Depreciation $ 24      
Date of Construction 2015      
Date Acquired Dec. 15, 2021      
Sanford W SR 46 [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Sanford W SR 46 [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Lake Zurich [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST IL      
Initial Cost to Company, Land $ 887      
Initial Cost to Company, Building, Equipment and Improvements 13,438      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 4      
Gross Amount at Which Carried at Close of Period, Land 887      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 13,442      
Gross Amount at Which Carried at Close of Period, Total 14,329      
Accumulated Depreciation $ 28      
Date of Construction 2002      
Date Acquired Dec. 13, 2021      
Lake Zurich [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Lake Zurich [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Charleston [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST SC      
Initial Cost to Company, Land $ 416      
Initial Cost to Company, Building, Equipment and Improvements 1,516      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 2,488      
Gross Amount at Which Carried at Close of Period, Land 416      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 4,004      
Gross Amount at Which Carried at Close of Period, Total 4,420      
Accumulated Depreciation $ 2,098      
Date of Construction 1985      
Date Acquired Jun. 26, 1995      
Charleston [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Charleston [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Lakeland [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST FL      
Initial Cost to Company, Land $ 397      
Initial Cost to Company, Building, Equipment and Improvements 1,424      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 1,770      
Gross Amount at Which Carried at Close of Period, Land 397      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 3,194      
Gross Amount at Which Carried at Close of Period, Total 3,591      
Accumulated Depreciation $ 1,710      
Date of Construction 1985      
Date Acquired Jun. 26, 1995      
Lakeland [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Lakeland [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Charlotte [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST NC      
Initial Cost to Company, Land $ 308      
Initial Cost to Company, Building, Equipment and Improvements 1,102      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 3,744      
Gross Amount at Which Carried at Close of Period, Land 747      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 4,407      
Gross Amount at Which Carried at Close of Period, Total 5,154      
Accumulated Depreciation $ 1,824      
Date of Construction 1986      
Date Acquired Jun. 26, 1995      
Charlotte [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Charlotte [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Youngstown [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST OH      
Initial Cost to Company, Land $ 239      
Initial Cost to Company, Building, Equipment and Improvements 1,110      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 2,641      
Gross Amount at Which Carried at Close of Period, Land 239      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 3,751      
Gross Amount at Which Carried at Close of Period, Total 3,990      
Accumulated Depreciation $ 1,775      
Date of Construction 1980      
Date Acquired Jun. 26, 1995      
Youngstown [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Youngstown [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Cleveland [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST OH      
Initial Cost to Company, Land $ 701      
Initial Cost to Company, Building, Equipment and Improvements 1,659      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 3,855      
Gross Amount at Which Carried at Close of Period, Land 1,036      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 5,179      
Gross Amount at Which Carried at Close of Period, Total 6,215      
Accumulated Depreciation $ 2,071      
Date of Construction 1987/15      
Date Acquired Jun. 26, 1995      
Cleveland [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Cleveland [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Pt. St. Lucie [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST FL      
Initial Cost to Company, Land $ 395      
Initial Cost to Company, Building, Equipment and Improvements 1,501      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 3,554      
Gross Amount at Which Carried at Close of Period, Land 779      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 4,671      
Gross Amount at Which Carried at Close of Period, Total 5,450      
Accumulated Depreciation $ 1,657      
Date of Construction 1985/2019      
Date Acquired Jun. 26, 1995      
Pt. St. Lucie [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Pt. St. Lucie [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Orlando - Deltona [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST FL      
Initial Cost to Company, Land $ 483      
Initial Cost to Company, Building, Equipment and Improvements 1,752      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 2,473      
Gross Amount at Which Carried at Close of Period, Land 483      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 4,225      
Gross Amount at Which Carried at Close of Period, Total 4,708      
Accumulated Depreciation $ 2,351      
Date of Construction 1984      
Date Acquired Jun. 26, 1995      
Orlando - Deltona [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Orlando - Deltona [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
NY Metro-Middletown [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST NY      
Initial Cost to Company, Land $ 224      
Initial Cost to Company, Building, Equipment and Improvements 808      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 4,552      
Gross Amount at Which Carried at Close of Period, Land 224      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 5,360      
Gross Amount at Which Carried at Close of Period, Total 5,584      
Accumulated Depreciation $ 1,542      
Date of Construction 1988/17      
Date Acquired Jun. 26, 1995      
NY Metro-Middletown [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
NY Metro-Middletown [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Buffalo [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST NY      
Initial Cost to Company, Land $ 423      
Initial Cost to Company, Building, Equipment and Improvements 1,531      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 4,274      
Gross Amount at Which Carried at Close of Period, Land 497      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 5,731      
Gross Amount at Which Carried at Close of Period, Total 6,228      
Accumulated Depreciation $ 2,651      
Date of Construction 1981      
Date Acquired Jun. 26, 1995      
Buffalo [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Buffalo [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Rochester [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST NY      
Initial Cost to Company, Land $ 395      
Initial Cost to Company, Building, Equipment and Improvements 1,404      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 3,460      
Gross Amount at Which Carried at Close of Period, Land 395      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 4,864      
Gross Amount at Which Carried at Close of Period, Total 5,259      
Accumulated Depreciation $ 1,185      
Date of Construction 1981      
Date Acquired Jun. 26, 1995      
Rochester [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Rochester [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Jacksonville [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST FL      
Initial Cost to Company, Land $ 152      
Initial Cost to Company, Building, Equipment and Improvements 728      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 3,957      
Gross Amount at Which Carried at Close of Period, Land 687      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 4,150      
Gross Amount at Which Carried at Close of Period, Total 4,837      
Accumulated Depreciation $ 1,594      
Date of Construction 1985      
Date Acquired Jun. 26, 1995      
Jacksonville [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Jacksonville [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Boston [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST MA      
Initial Cost to Company, Land $ 363      
Initial Cost to Company, Building, Equipment and Improvements 1,679      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 984      
Gross Amount at Which Carried at Close of Period, Land 363      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 2,663      
Gross Amount at Which Carried at Close of Period, Total 3,026      
Accumulated Depreciation $ 1,619      
Date of Construction 1980      
Date Acquired Jun. 26, 1995      
Boston [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Boston [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Rochester [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST NY      
Initial Cost to Company, Land $ 230      
Initial Cost to Company, Building, Equipment and Improvements 847      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 2,359      
Gross Amount at Which Carried at Close of Period, Land 234      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 3,202      
Gross Amount at Which Carried at Close of Period, Total 3,436      
Accumulated Depreciation $ 1,284      
Date of Construction 1980      
Date Acquired Jun. 26, 1995      
Rochester [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Rochester [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Boston [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST MA      
Initial Cost to Company, Land $ 680      
Initial Cost to Company, Building, Equipment and Improvements 1,616      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 1,008      
Gross Amount at Which Carried at Close of Period, Land 680      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 2,624      
Gross Amount at Which Carried at Close of Period, Total 3,304      
Accumulated Depreciation $ 1,541      
Date of Construction 1986      
Date Acquired Jun. 26, 1995      
Boston [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Boston [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Savannah [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST GA      
Initial Cost to Company, Land $ 463      
Initial Cost to Company, Building, Equipment and Improvements 1,684      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 5,034      
Gross Amount at Which Carried at Close of Period, Land 1,445      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 5,736      
Gross Amount at Which Carried at Close of Period, Total 7,181      
Accumulated Depreciation $ 3,155      
Date of Construction 1981      
Date Acquired Jun. 26, 1995      
Savannah [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Savannah [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Raleigh-Durham [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST NC      
Initial Cost to Company, Land $ 321      
Initial Cost to Company, Building, Equipment and Improvements 1,150      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 3,535      
Gross Amount at Which Carried at Close of Period, Land 321      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 4,685      
Gross Amount at Which Carried at Close of Period, Total 5,006      
Accumulated Depreciation $ 1,608      
Date of Construction 1985      
Date Acquired Jun. 26, 1995      
Raleigh-Durham [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Raleigh-Durham [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Hartford-New Haven [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST CT      
Initial Cost to Company, Land $ 387      
Initial Cost to Company, Building, Equipment and Improvements 1,402      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 4,051      
Gross Amount at Which Carried at Close of Period, Land 387      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 5,453      
Gross Amount at Which Carried at Close of Period, Total 5,840      
Accumulated Depreciation $ 2,163      
Date of Construction 1985      
Date Acquired Jun. 26, 1995      
Hartford-New Haven [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Hartford-New Haven [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Roswell [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST GA      
Initial Cost to Company, Land $ 2,134      
Initial Cost to Company, Building, Equipment and Improvements 6,447      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 4      
Gross Amount at Which Carried at Close of Period, Land 2,134      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 6,451      
Gross Amount at Which Carried at Close of Period, Total 8,585      
Accumulated Depreciation $ 14      
Date of Construction 1998      
Date Acquired Dec. 13, 2021      
Roswell [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Roswell [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Atlanta [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST GA      
Initial Cost to Company, Land $ 844      
Initial Cost to Company, Building, Equipment and Improvements 2,021      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 1,144      
Gross Amount at Which Carried at Close of Period, Land 844      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 3,165      
Gross Amount at Which Carried at Close of Period, Total 4,009      
Accumulated Depreciation $ 1,906      
Date of Construction 1988      
Date Acquired Jun. 26, 1995      
Atlanta [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Atlanta [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Atlanta [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST GA      
Initial Cost to Company, Land $ 302      
Initial Cost to Company, Building, Equipment and Improvements 1,103      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 792      
Gross Amount at Which Carried at Close of Period, Land 303      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 1,894      
Gross Amount at Which Carried at Close of Period, Total 2,197      
Accumulated Depreciation $ 1,148      
Date of Construction 1988      
Date Acquired Jun. 26, 1995      
Atlanta [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Atlanta [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Buffalo [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST NY      
Initial Cost to Company, Land $ 315      
Initial Cost to Company, Building, Equipment and Improvements 745      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 4,154      
Gross Amount at Which Carried at Close of Period, Land 517      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 4,697      
Gross Amount at Which Carried at Close of Period, Total 5,214      
Accumulated Depreciation $ 1,928      
Date of Construction 1984      
Date Acquired Jun. 26, 1995      
Buffalo [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Buffalo [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Raleigh-Durham [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST NC      
Initial Cost to Company, Land $ 649      
Initial Cost to Company, Building, Equipment and Improvements 2,329      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 1,708      
Gross Amount at Which Carried at Close of Period, Land 649      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 4,037      
Gross Amount at Which Carried at Close of Period, Total 4,686      
Accumulated Depreciation $ 2,296      
Date of Construction 1985      
Date Acquired Jun. 26, 1995      
Raleigh-Durham [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Raleigh-Durham [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Columbia [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST SC      
Initial Cost to Company, Land $ 189      
Initial Cost to Company, Building, Equipment and Improvements 719      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 4,593      
Gross Amount at Which Carried at Close of Period, Land 189      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 5,312      
Gross Amount at Which Carried at Close of Period, Total 5,501      
Accumulated Depreciation $ 953      
Date of Construction 1989/2020      
Date Acquired Jun. 26, 1995      
Columbia [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Columbia [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Atlanta [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST GA      
Initial Cost to Company, Land $ 430      
Initial Cost to Company, Building, Equipment and Improvements 1,579      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 2,481      
Gross Amount at Which Carried at Close of Period, Land 602      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 3,888      
Gross Amount at Which Carried at Close of Period, Total 4,490      
Accumulated Depreciation $ 2,016      
Date of Construction 1988      
Date Acquired Jun. 26, 1995      
Atlanta [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Atlanta [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Orlando [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST FL      
Initial Cost to Company, Land $ 513      
Initial Cost to Company, Building, Equipment and Improvements 1,930      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 958      
Gross Amount at Which Carried at Close of Period, Land 513      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 2,888      
Gross Amount at Which Carried at Close of Period, Total 3,401      
Accumulated Depreciation $ 1,841      
Date of Construction 1988      
Date Acquired Jun. 26, 1995      
Orlando [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Orlando [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Sharon [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST PA      
Initial Cost to Company, Land $ 194      
Initial Cost to Company, Building, Equipment and Improvements 912      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 730      
Gross Amount at Which Carried at Close of Period, Land 194      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 1,642      
Gross Amount at Which Carried at Close of Period, Total 1,836      
Accumulated Depreciation $ 990      
Date of Construction 1975      
Date Acquired Jun. 26, 1995      
Sharon [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Sharon [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Ft. Lauderdale [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST FL      
Initial Cost to Company, Land $ 1,503      
Initial Cost to Company, Building, Equipment and Improvements 3,619      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 1,757      
Gross Amount at Which Carried at Close of Period, Land 1,503      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 5,376      
Gross Amount at Which Carried at Close of Period, Total 6,879      
Accumulated Depreciation $ 2,957      
Date of Construction 1985      
Date Acquired Jun. 26, 1995      
Ft. Lauderdale [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Ft. Lauderdale [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
West Palm [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST FL      
Initial Cost to Company, Land $ 398      
Initial Cost to Company, Building, Equipment and Improvements 1,035      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 717      
Gross Amount at Which Carried at Close of Period, Land 398      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 1,752      
Gross Amount at Which Carried at Close of Period, Total 2,150      
Accumulated Depreciation $ 1,037      
Date of Construction 1985      
Date Acquired Jun. 26, 1995      
West Palm [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
West Palm [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Atlanta [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST GA      
Initial Cost to Company, Land $ 423      
Initial Cost to Company, Building, Equipment and Improvements 1,015      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 3,463      
Gross Amount at Which Carried at Close of Period, Land 424      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 4,477      
Gross Amount at Which Carried at Close of Period, Total 4,901      
Accumulated Depreciation $ 1,167      
Date of Construction 1989      
Date Acquired Jun. 26, 1995      
Atlanta [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Atlanta [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Atlanta [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST GA      
Initial Cost to Company, Land $ 483      
Initial Cost to Company, Building, Equipment and Improvements 1,166      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 1,417      
Gross Amount at Which Carried at Close of Period, Land 483      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 2,583      
Gross Amount at Which Carried at Close of Period, Total 3,066      
Accumulated Depreciation $ 1,407      
Date of Construction 1988      
Date Acquired Jun. 26, 1995      
Atlanta [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Atlanta [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Atlanta [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST GA      
Initial Cost to Company, Land $ 308      
Initial Cost to Company, Building, Equipment and Improvements 1,116      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 1,113      
Gross Amount at Which Carried at Close of Period, Land 308      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 2,229      
Gross Amount at Which Carried at Close of Period, Total 2,537      
Accumulated Depreciation $ 1,290      
Date of Construction 1986      
Date Acquired Jun. 26, 1995      
Atlanta [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Atlanta [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Atlanta [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST GA      
Initial Cost to Company, Land $ 170      
Initial Cost to Company, Building, Equipment and Improvements 786      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 997      
Gross Amount at Which Carried at Close of Period, Land 174      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 1,779      
Gross Amount at Which Carried at Close of Period, Total 1,953      
Accumulated Depreciation $ 1,043      
Date of Construction 1981      
Date Acquired Jun. 26, 1995      
Atlanta [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Atlanta [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Atlanta [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST GA      
Initial Cost to Company, Land $ 413      
Initial Cost to Company, Building, Equipment and Improvements 999      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 989      
Gross Amount at Which Carried at Close of Period, Land 413      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 1,988      
Gross Amount at Which Carried at Close of Period, Total 2,401      
Accumulated Depreciation $ 1,299      
Date of Construction 1975      
Date Acquired Jun. 26, 1995      
Atlanta [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Atlanta [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Baltimore [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST MD      
Initial Cost to Company, Land $ 154      
Initial Cost to Company, Building, Equipment and Improvements 555      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 1,590      
Gross Amount at Which Carried at Close of Period, Land 306      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 1,993      
Gross Amount at Which Carried at Close of Period, Total 2,299      
Accumulated Depreciation $ 1,090      
Date of Construction 1984      
Date Acquired Jun. 26, 1995      
Baltimore [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Baltimore [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Baltimore [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST MD      
Initial Cost to Company, Land $ 479      
Initial Cost to Company, Building, Equipment and Improvements 1,742      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 3,298      
Gross Amount at Which Carried at Close of Period, Land 479      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 5,040      
Gross Amount at Which Carried at Close of Period, Total 5,519      
Accumulated Depreciation $ 2,487      
Date of Construction 1988      
Date Acquired Jun. 26, 1995      
Baltimore [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Baltimore [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Melbourne [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST FL      
Initial Cost to Company, Land $ 883      
Initial Cost to Company, Building, Equipment and Improvements 2,104      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 5,511      
Gross Amount at Which Carried at Close of Period, Land 883      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 7,615      
Gross Amount at Which Carried at Close of Period, Total 8,498      
Accumulated Depreciation $ 2,510      
Date of Construction 1986/2019      
Date Acquired Jun. 26, 1995      
Melbourne [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Melbourne [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Newport News [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST VA      
Initial Cost to Company, Land $ 316      
Initial Cost to Company, Building, Equipment and Improvements 1,471      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 1,216      
Gross Amount at Which Carried at Close of Period, Land 316      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 2,687      
Gross Amount at Which Carried at Close of Period, Total 3,003      
Accumulated Depreciation $ 1,613      
Date of Construction 1988      
Date Acquired Jun. 26, 1995      
Newport News [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Newport News [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Pensacola [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST FL      
Initial Cost to Company, Land $ 632      
Initial Cost to Company, Building, Equipment and Improvements 2,962      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 2,061      
Gross Amount at Which Carried at Close of Period, Land 651      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 5,004      
Gross Amount at Which Carried at Close of Period, Total 5,655      
Accumulated Depreciation $ 3,091      
Date of Construction 1983      
Date Acquired Jun. 26, 1995      
Pensacola [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Pensacola [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Hartford [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST CT      
Initial Cost to Company, Land $ 715      
Initial Cost to Company, Building, Equipment and Improvements 1,695      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 1,447      
Gross Amount at Which Carried at Close of Period, Land 715      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 3,142      
Gross Amount at Which Carried at Close of Period, Total 3,857      
Accumulated Depreciation $ 1,886      
Date of Construction 1988      
Date Acquired Jun. 26, 1995      
Hartford [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Hartford [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Atlanta [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST GA      
Initial Cost to Company, Land $ 304      
Initial Cost to Company, Building, Equipment and Improvements 1,118      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 3,071      
Gross Amount at Which Carried at Close of Period, Land 619      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 3,874      
Gross Amount at Which Carried at Close of Period, Total 4,493      
Accumulated Depreciation $ 2,024      
Date of Construction 1988      
Date Acquired Jun. 26, 1995      
Atlanta [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Atlanta [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Alexandria [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST VA      
Initial Cost to Company, Land $ 1,375      
Initial Cost to Company, Building, Equipment and Improvements 3,220      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 3,300      
Gross Amount at Which Carried at Close of Period, Land 1,376      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 6,519      
Gross Amount at Which Carried at Close of Period, Total 7,895      
Accumulated Depreciation $ 3,779      
Date of Construction 1984      
Date Acquired Jun. 26, 1995      
Alexandria [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Alexandria [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Pensacola [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST FL      
Initial Cost to Company, Land $ 244      
Initial Cost to Company, Building, Equipment and Improvements 901      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 794      
Gross Amount at Which Carried at Close of Period, Land 244      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 1,695      
Gross Amount at Which Carried at Close of Period, Total 1,939      
Accumulated Depreciation $ 1,010      
Date of Construction 1986      
Date Acquired Jun. 26, 1995      
Pensacola [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Pensacola [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Melbourne [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST FL      
Initial Cost to Company, Land $ 834      
Initial Cost to Company, Building, Equipment and Improvements 2,066      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 3,599      
Gross Amount at Which Carried at Close of Period, Land 1,591      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 4,908      
Gross Amount at Which Carried at Close of Period, Total 6,499      
Accumulated Depreciation $ 2,120      
Date of Construction 1986/15      
Date Acquired Jun. 26, 1995      
Melbourne [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Melbourne [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Hartford [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST CT      
Initial Cost to Company, Land $ 234      
Initial Cost to Company, Building, Equipment and Improvements 861      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 3,652      
Gross Amount at Which Carried at Close of Period, Land 612      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 4,135      
Gross Amount at Which Carried at Close of Period, Total 4,747      
Accumulated Depreciation $ 1,767      
Date of Construction 1992      
Date Acquired Jun. 26, 1995      
Hartford [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Hartford [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Atlanta [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST GA      
Initial Cost to Company, Land $ 256      
Initial Cost to Company, Building, Equipment and Improvements 1,244      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 2,597      
Gross Amount at Which Carried at Close of Period, Land 256      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 3,841      
Gross Amount at Which Carried at Close of Period, Total 4,097      
Accumulated Depreciation $ 1,984      
Date of Construction 1988      
Date Acquired Jun. 26, 1995      
Atlanta [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Atlanta [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Norfolk [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST VA      
Initial Cost to Company, Land $ 313      
Initial Cost to Company, Building, Equipment and Improvements 1,462      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 2,901      
Gross Amount at Which Carried at Close of Period, Land 313      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 4,363      
Gross Amount at Which Carried at Close of Period, Total 4,676      
Accumulated Depreciation $ 2,019      
Date of Construction 1984      
Date Acquired Jun. 26, 1995      
Norfolk [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Norfolk [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Birmingham [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST AL      
Initial Cost to Company, Land $ 307      
Initial Cost to Company, Building, Equipment and Improvements 1,415      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 1,985      
Gross Amount at Which Carried at Close of Period, Land 385      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 3,322      
Gross Amount at Which Carried at Close of Period, Total 3,707      
Accumulated Depreciation $ 1,827      
Date of Construction 1990      
Date Acquired Jun. 26, 1995      
Birmingham [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Birmingham [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Birmingham [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST AL      
Initial Cost to Company, Land $ 730      
Initial Cost to Company, Building, Equipment and Improvements 1,725      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 3,090      
Gross Amount at Which Carried at Close of Period, Land 730      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 4,815      
Gross Amount at Which Carried at Close of Period, Total 5,545      
Accumulated Depreciation $ 2,158      
Date of Construction 1990      
Date Acquired Jun. 26, 1995      
Birmingham [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Birmingham [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Montgomery [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST AL      
Initial Cost to Company, Land $ 863      
Initial Cost to Company, Building, Equipment and Improvements 2,041      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 1,613      
Gross Amount at Which Carried at Close of Period, Land 863      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 3,654      
Gross Amount at Which Carried at Close of Period, Total 4,517      
Accumulated Depreciation $ 2,094      
Date of Construction 1982      
Date Acquired Jun. 26, 1995      
Montgomery [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Montgomery [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Jacksonville [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST FL      
Initial Cost to Company, Land $ 326      
Initial Cost to Company, Building, Equipment and Improvements 1,515      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 1,473      
Gross Amount at Which Carried at Close of Period, Land 326      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 2,988      
Gross Amount at Which Carried at Close of Period, Total 3,314      
Accumulated Depreciation $ 1,574      
Date of Construction 1987      
Date Acquired Jun. 26, 1995      
Jacksonville [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Jacksonville [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Pensacola [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST FL      
Initial Cost to Company, Land $ 369      
Initial Cost to Company, Building, Equipment and Improvements 1,358      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 3,617      
Gross Amount at Which Carried at Close of Period, Land 369      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 4,975      
Gross Amount at Which Carried at Close of Period, Total 5,344      
Accumulated Depreciation $ 2,535      
Date of Construction 1986      
Date Acquired Jun. 26, 1995      
Pensacola [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Pensacola [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Pensacola [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST FL      
Initial Cost to Company, Land $ 244      
Initial Cost to Company, Building, Equipment and Improvements 1,128      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 2,965      
Gross Amount at Which Carried at Close of Period, Land 720      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 3,617      
Gross Amount at Which Carried at Close of Period, Total 4,337      
Accumulated Depreciation $ 1,658      
Date of Construction 1990      
Date Acquired Jun. 26, 1995      
Pensacola [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Pensacola [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Pensacola [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST FL      
Initial Cost to Company, Land $ 226      
Initial Cost to Company, Building, Equipment and Improvements 1,046      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 998      
Gross Amount at Which Carried at Close of Period, Land 226      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 2,044      
Gross Amount at Which Carried at Close of Period, Total 2,270      
Accumulated Depreciation $ 1,218      
Date of Construction 1990      
Date Acquired Jun. 26, 1995      
Pensacola [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Pensacola [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Tampa [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST FL      
Initial Cost to Company, Land $ 1,088      
Initial Cost to Company, Building, Equipment and Improvements 2,597      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 1,735      
Gross Amount at Which Carried at Close of Period, Land 1,088      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 4,332      
Gross Amount at Which Carried at Close of Period, Total 5,420      
Accumulated Depreciation $ 2,568      
Date of Construction 1989      
Date Acquired Jun. 26, 1995      
Tampa [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Tampa [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Clearwater [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST FL      
Initial Cost to Company, Land $ 526      
Initial Cost to Company, Building, Equipment and Improvements 1,958      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 1,635      
Gross Amount at Which Carried at Close of Period, Land 526      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 3,593      
Gross Amount at Which Carried at Close of Period, Total 4,119      
Accumulated Depreciation $ 2,091      
Date of Construction 1985      
Date Acquired Jun. 26, 1995      
Clearwater [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Clearwater [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Clearwater-Largo [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST FL      
Initial Cost to Company, Land $ 672      
Initial Cost to Company, Building, Equipment and Improvements 2,439      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 1,252      
Gross Amount at Which Carried at Close of Period, Land 672      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 3,691      
Gross Amount at Which Carried at Close of Period, Total 4,363      
Accumulated Depreciation $ 2,197      
Date of Construction 1988      
Date Acquired Jun. 26, 1995      
Clearwater-Largo [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Clearwater-Largo [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Providence [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST RI      
Initial Cost to Company, Land $ 345      
Initial Cost to Company, Building, Equipment and Improvements 1,268      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 2,167      
Gross Amount at Which Carried at Close of Period, Land 486      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 3,294      
Gross Amount at Which Carried at Close of Period, Total 3,780      
Accumulated Depreciation $ 1,607      
Date of Construction 1984      
Date Acquired Jun. 26, 1995      
Providence [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Providence [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Norfolk - Virginia Beach [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST VA      
Initial Cost to Company, Land $ 1,142      
Initial Cost to Company, Building, Equipment and Improvements 4,998      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 3,726      
Gross Amount at Which Carried at Close of Period, Land 1,142      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 8,724      
Gross Amount at Which Carried at Close of Period, Total 9,866      
Accumulated Depreciation $ 4,294      
Date of Construction 1989/93/95/16      
Date Acquired Jun. 26, 1995      
Norfolk - Virginia Beach [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Norfolk - Virginia Beach [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Richmond [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST VA      
Initial Cost to Company, Land $ 443      
Initial Cost to Company, Building, Equipment and Improvements 1,602      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 1,316      
Gross Amount at Which Carried at Close of Period, Land 443      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 2,918      
Gross Amount at Which Carried at Close of Period, Total 3,361      
Accumulated Depreciation $ 1,737      
Date of Construction 1987      
Date Acquired Aug. 25, 1995      
Richmond [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Richmond [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Orlando [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST FL      
Initial Cost to Company, Land $ 1,161      
Initial Cost to Company, Building, Equipment and Improvements 2,755      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 3,153      
Gross Amount at Which Carried at Close of Period, Land 1,162      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 5,907      
Gross Amount at Which Carried at Close of Period, Total 7,069      
Accumulated Depreciation $ 2,853      
Date of Construction 1986/15      
Date Acquired Sep. 29, 1995      
Orlando [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Orlando [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Syracuse [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST NY      
Initial Cost to Company, Land $ 470      
Initial Cost to Company, Building, Equipment and Improvements 1,712      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 1,832      
Gross Amount at Which Carried at Close of Period, Land 472      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 3,542      
Gross Amount at Which Carried at Close of Period, Total 4,014      
Accumulated Depreciation $ 1,991      
Date of Construction 1987      
Date Acquired Dec. 27, 1995      
Syracuse [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Syracuse [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Ft. Myers [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST FL      
Initial Cost to Company, Land $ 205      
Initial Cost to Company, Building, Equipment and Improvements 912      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 858      
Gross Amount at Which Carried at Close of Period, Land 206      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 1,769      
Gross Amount at Which Carried at Close of Period, Total 1,975      
Accumulated Depreciation $ 1,015      
Date of Construction 1988      
Date Acquired Dec. 28, 1995      
Ft. Myers [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Ft. Myers [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Ft. Myers [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST FL      
Initial Cost to Company, Land $ 412      
Initial Cost to Company, Building, Equipment and Improvements 1,703      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 979      
Gross Amount at Which Carried at Close of Period, Land 413      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 2,681      
Gross Amount at Which Carried at Close of Period, Total 3,094      
Accumulated Depreciation $ 1,706      
Date of Construction 1991/94      
Date Acquired Dec. 28, 1995      
Ft. Myers [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Ft. Myers [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Harrisburg [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST PA      
Initial Cost to Company, Land $ 360      
Initial Cost to Company, Building, Equipment and Improvements 1,641      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 3,425      
Gross Amount at Which Carried at Close of Period, Land 360      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 5,066      
Gross Amount at Which Carried at Close of Period, Total 5,426      
Accumulated Depreciation $ 1,507      
Date of Construction 1983      
Date Acquired Dec. 29, 1995      
Harrisburg [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Harrisburg [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Harrisburg [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST PA      
Initial Cost to Company, Land $ 627      
Initial Cost to Company, Building, Equipment and Improvements 2,224      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 5,359      
Gross Amount at Which Carried at Close of Period, Land 692      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 7,518      
Gross Amount at Which Carried at Close of Period, Total 8,210      
Accumulated Depreciation $ 2,912      
Date of Construction 1985      
Date Acquired Dec. 29, 1995      
Harrisburg [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Harrisburg [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Newport News [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST VA      
Initial Cost to Company, Land $ 442      
Initial Cost to Company, Building, Equipment and Improvements 1,592      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 1,593      
Gross Amount at Which Carried at Close of Period, Land 442      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 3,185      
Gross Amount at Which Carried at Close of Period, Total 3,627      
Accumulated Depreciation $ 1,938      
Date of Construction 1988/93      
Date Acquired Jan. 05, 1996      
Newport News [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Newport News [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Montgomery [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST AL      
Initial Cost to Company, Land $ 353      
Initial Cost to Company, Building, Equipment and Improvements 1,299      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 1,276      
Gross Amount at Which Carried at Close of Period, Land 353      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 2,575      
Gross Amount at Which Carried at Close of Period, Total 2,928      
Accumulated Depreciation $ 1,369      
Date of Construction 1984      
Date Acquired Jan. 23, 1996      
Montgomery [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Montgomery [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Charleston [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST SC      
Initial Cost to Company, Land $ 237      
Initial Cost to Company, Building, Equipment and Improvements 858      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 1,094      
Gross Amount at Which Carried at Close of Period, Land 245      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 1,944      
Gross Amount at Which Carried at Close of Period, Total 2,189      
Accumulated Depreciation $ 1,176      
Date of Construction 1985      
Date Acquired Mar. 01, 1996      
Tampa [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST FL      
Initial Cost to Company, Land $ 766      
Initial Cost to Company, Building, Equipment and Improvements 1,800      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 1,171      
Gross Amount at Which Carried at Close of Period, Land 766      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 2,971      
Gross Amount at Which Carried at Close of Period, Total 3,737      
Accumulated Depreciation $ 1,709      
Date of Construction 1985      
Date Acquired Mar. 28, 1996      
Tampa [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Tampa [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Dallas-Ft.Worth [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST TX      
Initial Cost to Company, Land $ 442      
Initial Cost to Company, Building, Equipment and Improvements 1,767      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 477      
Gross Amount at Which Carried at Close of Period, Land 442      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 2,244      
Gross Amount at Which Carried at Close of Period, Total 2,686      
Accumulated Depreciation $ 1,449      
Date of Construction 1987      
Date Acquired Mar. 29, 1996      
Dallas-Ft.Worth [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Dallas-Ft.Worth [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Dallas-Ft.Worth [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST TX      
Initial Cost to Company, Land $ 408      
Initial Cost to Company, Building, Equipment and Improvements 1,662      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 1,603      
Gross Amount at Which Carried at Close of Period, Land 408      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 3,265      
Gross Amount at Which Carried at Close of Period, Total 3,673      
Accumulated Depreciation $ 1,850      
Date of Construction 1986      
Date Acquired Mar. 29, 1996      
Dallas-Ft.Worth [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Dallas-Ft.Worth [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Dallas-Ft.Worth [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST TX      
Initial Cost to Company, Land $ 328      
Initial Cost to Company, Building, Equipment and Improvements 1,324      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 4,826      
Gross Amount at Which Carried at Close of Period, Land 328      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 6,150      
Gross Amount at Which Carried at Close of Period, Total 6,478      
Accumulated Depreciation $ 466      
Date of Construction 2018      
Date Acquired Mar. 29, 1996      
Dallas-Ft.Worth [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Dallas-Ft.Worth [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
San Antonio [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST TX      
Initial Cost to Company, Land $ 436      
Initial Cost to Company, Building, Equipment and Improvements 1,759      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 1,760      
Gross Amount at Which Carried at Close of Period, Land 436      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 3,519      
Gross Amount at Which Carried at Close of Period, Total 3,955      
Accumulated Depreciation $ 1,977      
Date of Construction 1986      
Date Acquired Mar. 29, 1996      
San Antonio [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
San Antonio [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
San Antonio [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST TX      
Initial Cost to Company, Land $ 289      
Initial Cost to Company, Building, Equipment and Improvements 1,161      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 2,526      
Gross Amount at Which Carried at Close of Period, Land 289      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 3,687      
Gross Amount at Which Carried at Close of Period, Total 3,976      
Accumulated Depreciation $ 844      
Date of Construction 2012      
Date Acquired Mar. 29, 1996      
San Antonio [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
San Antonio [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Montgomery [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST AL      
Initial Cost to Company, Land $ 279      
Initial Cost to Company, Building, Equipment and Improvements 1,014      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 1,593      
Gross Amount at Which Carried at Close of Period, Land 433      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 2,453      
Gross Amount at Which Carried at Close of Period, Total 2,886      
Accumulated Depreciation $ 1,343      
Date of Construction 1988      
Date Acquired May 21, 1996      
Montgomery [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Montgomery [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
West Palm [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST FL      
Initial Cost to Company, Land $ 345      
Initial Cost to Company, Building, Equipment and Improvements 1,262      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 694      
Gross Amount at Which Carried at Close of Period, Land 345      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 1,956      
Gross Amount at Which Carried at Close of Period, Total 2,301      
Accumulated Depreciation $ 1,157      
Date of Construction 1986      
Date Acquired May 29, 1996      
West Palm [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
West Palm [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Ft. Myers [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST FL      
Initial Cost to Company, Land $ 229      
Initial Cost to Company, Building, Equipment and Improvements 884      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 2,923      
Gross Amount at Which Carried at Close of Period, Land 383      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 3,653      
Gross Amount at Which Carried at Close of Period, Total 4,036      
Accumulated Depreciation $ 1,312      
Date of Construction 1986      
Date Acquired May 29, 1996      
Ft. Myers [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Ft. Myers [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Syracuse [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST NY      
Initial Cost to Company, Land $ 481      
Initial Cost to Company, Building, Equipment and Improvements 1,559      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 2,752      
Gross Amount at Which Carried at Close of Period, Land 671      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 4,121      
Gross Amount at Which Carried at Close of Period, Total 4,792      
Accumulated Depreciation $ 2,327      
Date of Construction 1983      
Date Acquired Jun. 05, 1996      
Syracuse [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Syracuse [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Lakeland [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST FL      
Initial Cost to Company, Land $ 359      
Initial Cost to Company, Building, Equipment and Improvements 1,287      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 1,455      
Gross Amount at Which Carried at Close of Period, Land 359      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 2,742      
Gross Amount at Which Carried at Close of Period, Total 3,101      
Accumulated Depreciation $ 1,682      
Date of Construction 1988      
Date Acquired Jun. 26, 1996      
Lakeland [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Lakeland [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Boston - Springfield [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST MA      
Initial Cost to Company, Land $ 251      
Initial Cost to Company, Building, Equipment and Improvements 917      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 2,616      
Gross Amount at Which Carried at Close of Period, Land 297      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 3,487      
Gross Amount at Which Carried at Close of Period, Total 3,784      
Accumulated Depreciation $ 1,975      
Date of Construction 1986      
Date Acquired Jun. 28, 1996      
Boston - Springfield [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Boston - Springfield [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Ft. Myers [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST FL      
Initial Cost to Company, Land $ 344      
Initial Cost to Company, Building, Equipment and Improvements 1,254      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 768      
Gross Amount at Which Carried at Close of Period, Land 310      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 2,056      
Gross Amount at Which Carried at Close of Period, Total 2,366      
Accumulated Depreciation $ 1,230      
Date of Construction 1987      
Date Acquired Jun. 28, 1996      
Ft. Myers [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Ft. Myers [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Cincinnati [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST OH      
Initial Cost to Company, Land $ 557      
Initial Cost to Company, Building, Equipment and Improvements 1,988      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 1,044      
Gross Amount at Which Carried at Close of Period, Land 688      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 2,901      
Gross Amount at Which Carried at Close of Period, Total 3,589      
Accumulated Depreciation $ 1,317      
Date of Construction 1988      
Date Acquired Jul. 23, 1996      
Cincinnati [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Cincinnati [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Baltimore [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST MD      
Initial Cost to Company, Land $ 777      
Initial Cost to Company, Building, Equipment and Improvements 2,770      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 1,071      
Gross Amount at Which Carried at Close of Period, Land 777      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 3,841      
Gross Amount at Which Carried at Close of Period, Total 4,618      
Accumulated Depreciation $ 2,252      
Date of Construction 1990      
Date Acquired Jul. 26, 1996      
Baltimore [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Baltimore [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Jacksonville [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST FL      
Initial Cost to Company, Land $ 568      
Initial Cost to Company, Building, Equipment and Improvements 2,028      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 1,945      
Gross Amount at Which Carried at Close of Period, Land 568      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 3,973      
Gross Amount at Which Carried at Close of Period, Total 4,541      
Accumulated Depreciation $ 2,224      
Date of Construction 1987      
Date Acquired Aug. 23, 1996      
Jacksonville [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Jacksonville [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Jacksonville [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST FL      
Initial Cost to Company, Land $ 436      
Initial Cost to Company, Building, Equipment and Improvements 1,635      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 1,253      
Gross Amount at Which Carried at Close of Period, Land 436      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 2,888      
Gross Amount at Which Carried at Close of Period, Total 3,324      
Accumulated Depreciation $ 1,649      
Date of Construction 1985      
Date Acquired Aug. 26, 1996      
Jacksonville [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Jacksonville [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Jacksonville [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST FL      
Initial Cost to Company, Land $ 535      
Initial Cost to Company, Building, Equipment and Improvements 2,033      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 775      
Gross Amount at Which Carried at Close of Period, Land 538      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 2,805      
Gross Amount at Which Carried at Close of Period, Total 3,343      
Accumulated Depreciation $ 1,759      
Date of Construction 1987/92      
Date Acquired Aug. 30, 1996      
Jacksonville [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Jacksonville [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Charlotte [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST NC      
Initial Cost to Company, Land $ 487      
Initial Cost to Company, Building, Equipment and Improvements 1,754      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 786      
Gross Amount at Which Carried at Close of Period, Land 487      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 2,540      
Gross Amount at Which Carried at Close of Period, Total 3,027      
Accumulated Depreciation $ 1,508      
Date of Construction 1995      
Date Acquired Sep. 16, 1996      
Charlotte [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Charlotte [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Charlotte [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST NC      
Initial Cost to Company, Land $ 315      
Initial Cost to Company, Building, Equipment and Improvements 1,131      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 653      
Gross Amount at Which Carried at Close of Period, Land 315      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 1,784      
Gross Amount at Which Carried at Close of Period, Total 2,099      
Accumulated Depreciation $ 1,081      
Date of Construction 1995      
Date Acquired Sep. 16, 1996      
Charlotte [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Charlotte [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Orlando [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST FL      
Initial Cost to Company, Land $ 314      
Initial Cost to Company, Building, Equipment and Improvements 1,113      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 1,573      
Gross Amount at Which Carried at Close of Period, Land 314      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 2,686      
Gross Amount at Which Carried at Close of Period, Total 3,000      
Accumulated Depreciation $ 1,507      
Date of Construction 1975      
Date Acquired Oct. 30, 1996      
Orlando [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Orlando [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Rochester [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST NY      
Initial Cost to Company, Land $ 704      
Initial Cost to Company, Building, Equipment and Improvements 2,496      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 3,254      
Gross Amount at Which Carried at Close of Period, Land 707      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 5,747      
Gross Amount at Which Carried at Close of Period, Total 6,454      
Accumulated Depreciation $ 2,718      
Date of Construction 1990      
Date Acquired Dec. 20, 1996      
Rochester [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Rochester [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Youngstown [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST OH      
Initial Cost to Company, Land $ 600      
Initial Cost to Company, Building, Equipment and Improvements 2,142      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 2,843      
Gross Amount at Which Carried at Close of Period, Land 693      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 4,892      
Gross Amount at Which Carried at Close of Period, Total 5,585      
Accumulated Depreciation $ 2,415      
Date of Construction 1988      
Date Acquired Jan. 10, 1997      
Youngstown [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Youngstown [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Cleveland [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST OH      
Initial Cost to Company, Land $ 751      
Initial Cost to Company, Building, Equipment and Improvements 2,676      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 4,612      
Gross Amount at Which Carried at Close of Period, Land 751      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 7,288      
Gross Amount at Which Carried at Close of Period, Total 8,039      
Accumulated Depreciation $ 3,350      
Date of Construction 1986      
Date Acquired Jan. 10, 1997      
Cleveland [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Cleveland [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Cleveland [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST OH      
Initial Cost to Company, Land $ 725      
Initial Cost to Company, Building, Equipment and Improvements 2,586      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 2,723      
Gross Amount at Which Carried at Close of Period, Land 725      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 5,309      
Gross Amount at Which Carried at Close of Period, Total 6,034      
Accumulated Depreciation $ 2,851      
Date of Construction 1978      
Date Acquired Jan. 10, 1997      
Cleveland [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Cleveland [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Cleveland [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST OH      
Initial Cost to Company, Land $ 637      
Initial Cost to Company, Building, Equipment and Improvements 2,918      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 2,310      
Gross Amount at Which Carried at Close of Period, Land 701      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 5,164      
Gross Amount at Which Carried at Close of Period, Total 5,865      
Accumulated Depreciation $ 3,389      
Date of Construction 1979      
Date Acquired Jan. 10, 1997      
Cleveland [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Cleveland [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Cleveland [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST OH      
Initial Cost to Company, Land $ 495      
Initial Cost to Company, Building, Equipment and Improvements 1,781      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 4,243      
Gross Amount at Which Carried at Close of Period, Land 495      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 6,024      
Gross Amount at Which Carried at Close of Period, Total 6,519      
Accumulated Depreciation $ 2,225      
Date of Construction 1979/17      
Date Acquired Jan. 10, 1997      
Cleveland [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Cleveland [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Cleveland [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST OH      
Initial Cost to Company, Land $ 761      
Initial Cost to Company, Building, Equipment and Improvements 2,714      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 2,024      
Gross Amount at Which Carried at Close of Period, Land 761      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 4,738      
Gross Amount at Which Carried at Close of Period, Total 5,499      
Accumulated Depreciation $ 2,871      
Date of Construction 1977      
Date Acquired Jan. 10, 1997      
Cleveland [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Cleveland [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Cleveland [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST OH      
Initial Cost to Company, Land $ 418      
Initial Cost to Company, Building, Equipment and Improvements 1,921      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 3,095      
Gross Amount at Which Carried at Close of Period, Land 418      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 5,016      
Gross Amount at Which Carried at Close of Period, Total 5,434      
Accumulated Depreciation $ 2,581      
Date of Construction 1970      
Date Acquired Jan. 10, 1997      
Cleveland [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Cleveland [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Cleveland [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST OH      
Initial Cost to Company, Land $ 606      
Initial Cost to Company, Building, Equipment and Improvements 2,164      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 1,681      
Gross Amount at Which Carried at Close of Period, Land 606      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 3,845      
Gross Amount at Which Carried at Close of Period, Total 4,451      
Accumulated Depreciation $ 2,098      
Date of Construction 1982      
Date Acquired Jan. 10, 1997      
Cleveland [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Cleveland [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
San Antonio [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST TX      
Initial Cost to Company, Land $ 346      
Initial Cost to Company, Building, Equipment and Improvements 1,236      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 704      
Gross Amount at Which Carried at Close of Period, Land 346      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 1,940      
Gross Amount at Which Carried at Close of Period, Total 2,286      
Accumulated Depreciation $ 1,157      
Date of Construction 1985      
Date Acquired Jan. 30, 1997      
San Antonio [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
San Antonio [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
San Antonio [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST TX      
Initial Cost to Company, Land $ 432      
Initial Cost to Company, Building, Equipment and Improvements 1,560      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 2,290      
Gross Amount at Which Carried at Close of Period, Land 432      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 3,850      
Gross Amount at Which Carried at Close of Period, Total 4,282      
Accumulated Depreciation $ 2,179      
Date of Construction 1995      
Date Acquired Jan. 30, 1997      
San Antonio [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
San Antonio [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Houston-Beaumont [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST TX      
Initial Cost to Company, Land $ 634      
Initial Cost to Company, Building, Equipment and Improvements 2,565      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 4,840      
Gross Amount at Which Carried at Close of Period, Land 634      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 7,405      
Gross Amount at Which Carried at Close of Period, Total 8,039      
Accumulated Depreciation $ 2,905      
Date of Construction 1993/95/16      
Date Acquired Mar. 26, 1997      
Houston-Beaumont [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Houston-Beaumont [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Houston-Beaumont [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST TX      
Initial Cost to Company, Land $ 566      
Initial Cost to Company, Building, Equipment and Improvements 2,279      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 625      
Gross Amount at Which Carried at Close of Period, Land 566      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 2,904      
Gross Amount at Which Carried at Close of Period, Total 3,470      
Accumulated Depreciation $ 1,755      
Date of Construction 1995      
Date Acquired Mar. 26, 1997      
Houston-Beaumont [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Houston-Beaumont [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Houston-Beaumont [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST TX      
Initial Cost to Company, Land $ 293      
Initial Cost to Company, Building, Equipment and Improvements 1,357      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 736      
Gross Amount at Which Carried at Close of Period, Land 293      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 2,093      
Gross Amount at Which Carried at Close of Period, Total 2,386      
Accumulated Depreciation $ 1,189      
Date of Construction 1995      
Date Acquired Mar. 26, 1997      
Houston-Beaumont [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Houston-Beaumont [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Chesapeake [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST VA      
Initial Cost to Company, Land $ 260      
Initial Cost to Company, Building, Equipment and Improvements 1,043      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 4,944      
Gross Amount at Which Carried at Close of Period, Land 260      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 5,987      
Gross Amount at Which Carried at Close of Period, Total 6,247      
Accumulated Depreciation $ 2,315      
Date of Construction 1988/95      
Date Acquired Mar. 31, 1997      
Chesapeake [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Chesapeake [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Orlando-W 25th St [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST FL      
Initial Cost to Company, Land $ 289      
Initial Cost to Company, Building, Equipment and Improvements 1,160      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 2,666      
Gross Amount at Which Carried at Close of Period, Land 616      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 3,499      
Gross Amount at Which Carried at Close of Period, Total 4,115      
Accumulated Depreciation $ 1,411      
Date of Construction 1984      
Date Acquired Mar. 31, 1997      
Orlando-W 25th St [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Orlando-W 25th St [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Savannah [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST GA      
Initial Cost to Company, Land $ 296      
Initial Cost to Company, Building, Equipment and Improvements 1,196      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 754      
Gross Amount at Which Carried at Close of Period, Land 296      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 1,950      
Gross Amount at Which Carried at Close of Period, Total 2,246      
Accumulated Depreciation $ 1,101      
Date of Construction 1988      
Date Acquired May 08, 1997      
Savannah [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Savannah [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Delray [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST FL      
Initial Cost to Company, Land $ 921      
Initial Cost to Company, Building, Equipment and Improvements 3,282      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 1,316      
Gross Amount at Which Carried at Close of Period, Land 921      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 4,598      
Gross Amount at Which Carried at Close of Period, Total 5,519      
Accumulated Depreciation $ 2,621      
Date of Construction 1980      
Date Acquired May 21, 1997      
Delray [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Delray [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Cleveland-Avon [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST OH      
Initial Cost to Company, Land $ 301      
Initial Cost to Company, Building, Equipment and Improvements 1,214      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 2,456      
Gross Amount at Which Carried at Close of Period, Land 304      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 3,667      
Gross Amount at Which Carried at Close of Period, Total 3,971      
Accumulated Depreciation $ 1,916      
Date of Construction 1989      
Date Acquired Jun. 04, 1997      
Cleveland-Avon [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Cleveland-Avon [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Atlanta-Alpharetta [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST GA      
Initial Cost to Company, Land $ 1,033      
Initial Cost to Company, Building, Equipment and Improvements 3,753      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 940      
Gross Amount at Which Carried at Close of Period, Land 1,033      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 4,693      
Gross Amount at Which Carried at Close of Period, Total 5,726      
Accumulated Depreciation $ 2,787      
Date of Construction 1994      
Date Acquired Jul. 24, 1997      
Atlanta-Alpharetta [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Atlanta-Alpharetta [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Atlanta-Marietta [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST GA      
Initial Cost to Company, Land $ 769      
Initial Cost to Company, Building, Equipment and Improvements 2,788      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 866      
Gross Amount at Which Carried at Close of Period, Land 825      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 3,598      
Gross Amount at Which Carried at Close of Period, Total 4,423      
Accumulated Depreciation $ 2,113      
Date of Construction 1996      
Date Acquired Jul. 24, 1997      
Atlanta-Marietta [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Atlanta-Marietta [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Atlanta-Doraville [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST GA      
Initial Cost to Company, Land $ 735      
Initial Cost to Company, Building, Equipment and Improvements 3,429      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 814      
Gross Amount at Which Carried at Close of Period, Land 735      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 4,243      
Gross Amount at Which Carried at Close of Period, Total 4,978      
Accumulated Depreciation $ 2,480      
Date of Construction 1995      
Date Acquired Aug. 21, 1997      
Atlanta-Doraville [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Atlanta-Doraville [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Baton Rouge-Airline [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST LA      
Initial Cost to Company, Land $ 396      
Initial Cost to Company, Building, Equipment and Improvements 1,831      
Cost Capitalized Subsequent to Acquisition, Building, Equipment and Improvements 1,331      
Gross Amount at Which Carried at Close of Period, Land 421      
Gross Amount at Which Carried at Close of Period, Building, Equipment and Improvements 3,137      
Gross Amount at Which Carried at Close of Period, Total 3,558      
Accumulated Depreciation $ 1,778      
Date of Construction 1982      
Date Acquired Oct. 09, 1997      
Baton Rouge-Airline [Member] | Minimum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 5 years      
Baton Rouge-Airline [Member] | Maximum [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
Life on which depreciation in latest income statement is computed 40 years      
Baton Rouge-Airline2 [Member]        
SEC Schedule III, Real Estate and Accumulated Depreciation [Line Items]        
ST LA      
Initial Cost to Company, Land $ 282