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Summary of Significant Accounting Policies - Schedule of Derivative Instruments in Statement of Financial Position, Fair Value (Details) - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Derivatives, Fair Value    
Interest rate contracts $ 8,689 $ 3
Interest rate contracts 1,766 1,750
Interest Rate Cap    
Derivatives, Fair Value    
Interest rate contracts 8,689 3
Interest rate contracts 1,766 1,750
Interest Rate Cap | Carrying Value    
Derivatives, Fair Value    
Interest rate contracts 8,689 3
Interest rate contracts $ 1,766 $ 1,750