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Summary Of Significant Accounting Policies (Details)
12 Months Ended
Dec. 31, 2016
USD ($)
$ / shares
shares
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Property, Plant and Equipment [Line Items]      
VIE, qualitative or quantitative information, ownership percentage 50.00%    
Reverse section 1031 exchanges outstanding 1    
Restricted cash $ 41,722,000 $ 6,833,000  
Impairment of real estate 0 0 $ 0
Gain on sale of properties 4,700,000    
Deferred rent receivables, net 14,800,000 11,500,000  
Bad debt reserve $ 1,700,000 $ 1,100,000  
Stock repurchase program, number of shares authorized to be repurchased, percentage of weighted-average shares 5.00%    
Operating partnership return for Class B to vest 6.00%    
Share-based compensation, forfeitures | shares 0    
Share-based compensation, award vesting period 4 years    
Stock issued during period, shares, restricted stock award, gross | shares 9,800    
Share-based compensation grant date value | $ / shares $ 10.20    
Share-based compensation $ 24,000    
Share-based compensation vested in period | shares 0    
Share-based compensation, nonvested awards, compensation not yet recognized $ 75,425    
Share-based compensation, nonvested awards, compensation not yet recognized, period for recognition 2 years    
Land improvements      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, useful life 15 years    
Building and building improvements      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, useful life 30 years    
Minimum | Furniture, fixtures, and equipment      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, useful life 5 years    
Maximum | Furniture, fixtures, and equipment      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, useful life 7 years