Quarterly report pursuant to Section 13 or 15(d)

Unsecured Line Of Credit And Term Notes (Details)

v2.3.0.15
Unsecured Line Of Credit And Term Notes (Details) (USD $)
9 Months Ended 9 Months Ended 9 Months Ended 9 Months Ended
Sep. 30, 2011
Dec. 31, 2010
Sep. 30, 2011
Maturity In August 2018 [Member]
Aug. 05, 2011
Maturity In August 2018 [Member]
Sep. 30, 2011
Maturity In August 2016 [Member]
Dec. 31, 2010
Maturity In August 2016 [Member]
Sep. 30, 2011
Maturity In August 2021 [Member]
Sep. 30, 2011
Maturity In June 2012 [Member]
Sep. 30, 2011
Maturity In September 2013 [Member]
Sep. 30, 2011
Maturity In September 2013 [Member]
Fixed Interest Rate [Member]
Sep. 30, 2011
Maturity In April 2016 [Member]
Sep. 30, 2011
Mortgage Notes Payable [Member]
Line of Credit Facility                        
Unsecured term note $ 475,000,000 $ 400,000,000   $ 125,000,000     $ 100,000,000 $ 150,000,000 $ 20,000,000 $ 80,000,000 $ 150,000,000  
Basis spread over LIBOR     2.00%           1.50%      
Revolving line of credit facility agreement 175,000,000                      
Revolving line of credit facility expandable amount 250,000,000                      
Facility fee         0.20%              
Amount available on unsecured line of credit         61,000,000              
Unsecured revolving line of credit, fees paid 3,700,000                      
Extension facility fee 0.125%                      
Additional secured commitments     $ 100,000,000                  
Line of credit facility, Maturity date range, Start                       December 2011
Line of credit facility, Maturity date range, End                       March 2012
Interest rate on term loan             5.54%     6.26% 6.38%  
Increase in interest rate on term loan         8.13%   7.29%          
Interest rate, line of credit facility         2.23% 1.64%            
Line of credit facility, expiration date     August 2018       August 2021 June 2012 September 2013 September 2013 April 2016