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Derivative Instruments Non-Designated Hedges (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2017
USD ($)
Mar. 31, 2016
USD ($)
Derivative [Line Items]    
Gain (loss) on fair value of derivative instruments $ (3,752) $ 0
Not Designated as Hedging Instrument | Maximum    
Derivative [Line Items]    
Cap interest rate 3.82%  
Interest Rate Cap    
Derivative [Line Items]    
Gain (loss) on fair value of derivative instruments $ (78) 0
Interest Rate Cap | Not Designated as Hedging Instrument    
Derivative [Line Items]    
Debt service coverage ratio 1.2  
Interest Rate Cap | Not Designated as Hedging Instrument | Minimum    
Derivative [Line Items]    
Cap interest rate 2.07%  
Interest Rate Swap    
Derivative [Line Items]    
Gain (loss) on fair value of derivative instruments $ (3,674) $ 0