Consolidated Statements Of Comprehensive (Loss) Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Net income	$ (1,921)	$ 10,467	$ 3,828	$ 14,784
Unrealized loss on interest rate swap contracts, net of deferred income tax benefits of $925 and $4,082 for the three months ended June 30, 2020 and 2019, respectively, and $13,027 and $7,277 for the six months ended June 30, 2020 and 2019, respectively.	(3,240)	(13,606)	(43,082)	(26,309)
Foreign currency translation adjustments, net of deferred income tax expense of $437 and benefit of $162 for the three months ended June 30, 2020 and 2019, respectively, and benefits of $123 and $242 for the six months ended June 30, 2020 and 2019, respectively.	1,762	4,274	(17,858)	9,376
Other comprehensive loss	(1,478)	(9,332)	(60,940)	(16,933)
Total comprehensive (loss) income	(3,399)	1,135	(57,112)	(2,149)
Less: Comprehensive income (loss) attributable to noncontrolling interests	1	(5)	36	(5)
Comprehensive (loss) income attributable to controlling interests	$ (3,400)	$ 1,140	$ (57,148)	$ (2,144)