CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ 102,767	$ (42,417)	$ 130,260	$ (212,013)
Net change in fair value of effective portion of interest rate swaps designated as cash flow hedges, net of tax (expense) benefit of ($481), ($977), ($1,816), and $6,218, respectively	1,404	2,847	5,296	(18,127)
Reclassification adjustment for previously deferred loss from interest rate swaps included in "Interest expense," net of tax of $25, $0, $140, and $0, respectively	72		407
Total other comprehensive income (loss), net of tax	1,476	2,847	5,703	(18,127)
Comprehensive income (loss)	$ 104,243	$ (39,570)	$ 135,963	$ (230,140)