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Investments in Partially Owned Other (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Feb. 27, 2013
Variable Interest Entity [Line Items]      
Investments in unconsolidated entities $ 60,141 $ 68,101  
Unconsolidated Non-VIE      
Variable Interest Entity [Line Items]      
Investments in unconsolidated entities $ 0    
Unconsolidated Non-VIE | Residual JV [Domain]      
Variable Interest Entity [Line Items]      
Business Acquisition, Percentage of Voting Interests Acquired 60.00%    
Joint Venture Partner Ownership Percentage 40.00%    
Investments in unconsolidated entities $ 1,100   $ 147,600
Unconsolidated Non-VIE | Legacy JV [Domain]      
Variable Interest Entity [Line Items]      
Liquidation Value Preferred Interests $ 39,900