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Unconsolidated Joint Ventures - Additional Disclosures (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2016
USD ($)
investment
Mar. 31, 2015
USD ($)
Dec. 31, 2015
investment
Schedule of Equity Method Investments [Line Items]      
Number of unconsolidated joint ventures with ownership interests | investment 13   14
Management fee revenue, unconsolidated joint ventures $ 2,175 $ 2,968  
Equity in net income (loss) of unconsolidated joint ventures (7) $ 1,868  
Equity Method Investment, acquisition of partner's interest $ 20,600    
Minimum [Member]      
Schedule of Equity Method Investments [Line Items]      
Ownership percentage 5.00%    
Maximum [Member]      
Schedule of Equity Method Investments [Line Items]      
Ownership percentage 35.00%