CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ (223,631)	$ (286,821)
Net change in fair value of effective portion of interest rate swaps designated as cash flow hedges, net of tax benefit of $5,540 and $4,147, respectively	(16,151)	(12,091)
Reclassification adjustment for loss from interest rate swaps de- designated as cash flow hedges included in "Income (loss) from discontinued operations, net," net of tax of $3,661	10,675
Reclassification adjustment for previously deferred loss from interest rate swaps included in "Interest expense," net of tax of $61	178
Total other comprehensive loss, net of tax	(5,298)	(12,091)
Comprehensive income (loss)	$ (228,929)	$ (298,912)