Quarterly report pursuant to Section 13 or 15(d)

Investment In Storage Facilities (Summary Of Activity In Storage Facilities) (Details)

v2.3.0.15
Investment In Storage Facilities (Summary Of Activity In Storage Facilities) (Details) (USD $)
In Thousands, unless otherwise specified
9 Months Ended
Sep. 30, 2011
sqft
Investment [Line Items]  
Beginning balance $ 1,419,956
Number of self-storage facilities acquired 28
Acquisition of storage facilities 147,094
Improvements and equipment additions 17,077
Net increase in construction in progress 168
Dispositions (368)
Ending balance 1,583,927
Beginning balance 271,797
Depreciation expense during the period 25,655
Dispositions (305)
Ending balance 297,147
Acquired net rental square footage 1,900,000
Georgia [Member]
 
Investment [Line Items]  
Number of self-storage facilities acquired 1
Missouri [Member]
 
Investment [Line Items]  
Number of self-storage facilities acquired 1
New Jersey [Member]
 
Investment [Line Items]  
Number of self-storage facilities acquired 3
Texas [Member]
 
Investment [Line Items]  
Number of self-storage facilities acquired 22
Virginia [Member]
 
Investment [Line Items]  
Number of self-storage facilities acquired 1
In-Place Customer Leases [Member]
 
Investment [Line Items]  
Acquisition of storage facilities 3,400
Amortization period for in-place customer leases on a straight-line basis (in months) 12
Land [Member]
 
Investment [Line Items]  
Acquisition of storage facilities 28,800
Building [Member]
 
Investment [Line Items]  
Acquisition of storage facilities 116,200
Equipment [Member]
 
Investment [Line Items]  
Acquisition of storage facilities $ 2,100