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Derivatives - Effect On Condensed Consolidated Statements of Operations (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Derivatives Designated as Hedging Instruments | Interest rate swap contract | Cash Flow Hedging        
Derivative Instruments, Gain (Loss) [Line Items]        
(Loss) income recognized in other comprehensive income (loss) before reclassifications $ (93) $ 54 $ (128) $ 214
Derivatives Designated as Hedging Instruments | Interest rate swap contract | Cash Flow Hedging | Interest expense        
Derivative Instruments, Gain (Loss) [Line Items]        
Income reclassified from accumulated other comprehensive loss to earnings for the effective portion 44 54 125 75
Derivatives Designated as Hedging Instruments | Interest rate swap contract | Cash Flow Hedging | Income tax (benefit) expense        
Derivative Instruments, Gain (Loss) [Line Items]        
Income tax expense (14) (12) (30) (17)
Not Designated as Hedging Instruments | Income tax (benefit) expense        
Derivative Instruments, Gain (Loss) [Line Items]        
Income tax expense (32) 204 69 448
Not Designated as Hedging Instruments | Other, net        
Derivative Instruments, Gain (Loss) [Line Items]        
Income (loss) recognized in earnings $ 218 $ (895) $ (287) $ (1,924)