Quarterly report pursuant to Section 13 or 15(d)

Unsecured Revolving Credit Facility (Narrative) (Details)

v2.4.0.8
Unsecured Revolving Credit Facility (Narrative) (Details) (USD $)
 3 Months Ended 0 Months Ended 3 Months Ended
Mar. 31, 2014
Dec. 31, 2013
Mar. 31, 2014
Unsecured Revolving Credit Facility [Member]
item
entity
Mar. 31, 2014
Unsecured Revolving Credit Facility Extension 1 [Member]
Mar. 31, 2014
Unsecured Revolving Credit Facility Extension 2 [Member]
Jul. 15, 2013
Previous Unsecured Revolving Credit Facility [Member]
Mar. 31, 2014
Money Market Loan [Member]
Dec. 31, 2013
Money Market Loan [Member]
Mar. 31, 2014
Minimum [Member]
Unsecured Revolving Credit Facility [Member]
item
Mar. 31, 2014
Maximum [Member]
Unsecured Revolving Credit Facility [Member]
Mar. 31, 2014
Maximum [Member]
Money Market Loan [Member]
Line of Credit Facility [Line Items]                      
Number of lending institutions     17                
Borrowing capacity under the credit facility     $ 600,000,000     $ 600,000,000 $ 75,000,000        
Expandable borrowing capacity under the credit facility     1,000,000,000                
Credit facility maturity date     Jul. 01, 2017                
Number of extension options     2                
Credit facility, extension period     6 months                
Credit facility extension fee, basis points       0.075% 0.075% 0.25%          
Line of credit facility, bid feature, current borrowing capacity     300,000,000                
Leverage ratio                   60.00%  
Secured indebtedness                   40.00%  
Fixed charge coverage ratio                 1.5    
Unsecured indebtedness                   60.00%  
Unencumbered property interest coverage                 2.0    
Investment limitations as a percentage of total capitalization                   15.00%  
Terms of the unsecured facility     The terms of the unsecured facility include certain restrictions and covenants which limit, among other things the incurrence of additional indebtedness, the incurrence of liens and the disposition of real estate properties (to the extent that: (i) such property dispositions cause the Company to default on any of the financial ratios of the facility described below, or (ii) the property dispositions are completed while the Company is under an event of default under the facility, unless, under certain circumstances, such disposition is being carried out to cure such default), and which require compliance with financial ratios relating to the maximum leverage ratio (60 percent), the maximum amount of secured indebtedness (40 percent), the minimum amount of fixed charge coverage (1.5 times), the maximum amount of unsecured indebtedness (60 percent), the minimum amount of unencumbered property interest coverage (2.0 times) and certain investment limitations (generally 15 percent of total capitalization).                
Terms of dividend restriction     If an event of default has occurred and is continuing, the Company will not make any excess distributions except to enable the Company to continue to qualify as a REIT under the Code.                
Outstanding borrowings under the facility $ 70,000,000 $ 0         $ 0 $ 0      
Spread over LIBOR           1.25%          
Maturity period of the unsecured borrowing                     30 days