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Derivative Instruments (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Feb. 29, 2016
Dec. 31, 2015
Derivative [Line Items]        
Pre-tax (charge) on derivative instruments $ 300 $ (300)    
Net loss on financial instruments $ (5,030) $ (251)    
May 9, 2016 [Member] | Swap [Member]        
Derivative [Line Items]        
Stated Interest Rate 2.02%      
Market Value (Liability) $ 0     $ (247)
Derivative Liability, Notional Amount $ 0     50,625
June 30, 2017 [Member] [Member] | Swap [Member]        
Derivative [Line Items]        
Stated Interest Rate 1.1825%      
Market Value (Liability) $ (298)     (252)
Derivative Liability, Notional Amount $ 46,875     50,625
May 5, 2021 [Member] [Member] | Swap [Member]        
Derivative [Line Items]        
Stated Interest Rate 1.09%      
Market Value (Liability) $ (517)     0
Derivative Liability, Notional Amount $ 46,875   $ 48,750 $ 0