Derivatives - Effect On Condensed Consolidated Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Derivatives Designated as Hedging Instruments | Interest rate swap contract | Cash Flow Hedging
Derivative Instruments, Gain (Loss) [Line Items]
Loss recognized in other comprehensive loss before reclassifications	$ 0	$ (93)	$ 0	$ (128)
Derivatives Designated as Hedging Instruments | Interest rate swap contract | Cash Flow Hedging | Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Gain reclassified from accumulated other comprehensive loss to earnings for the effective portion	0	44	0	125
Derivatives Designated as Hedging Instruments | Interest rate swap contract | Cash Flow Hedging | Income tax benefit
Derivative Instruments, Gain (Loss) [Line Items]
Income tax expense	0	(14)	0	(30)
Not Designated as Hedging Instruments | Income tax benefit
Derivative Instruments, Gain (Loss) [Line Items]
Income tax expense	35	32	38	(69)
Not Designated as Hedging Instruments | Other, net
Derivative Instruments, Gain (Loss) [Line Items]
(Gain) loss recognized in earnings	$ (141)	$ (218)	$ (154)	$ 287