Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (102,000)	$ (225,000)	$ 251,000
Other comprehensive loss
Unrealized gains (losses) and amortization from cash flow hedges net of adjustment for de-designation of fuel hedges, net of deferred tax benefit/(expense)	1,000	(15,000)	21,000
Other comprehensive income (loss)	1,000	(15,000)	21,000
Comprehensive income (loss)	$ (101,000)	$ (240,000)	$ 272,000