Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Net loss	$ (94,010)	$ (78,764)	$ (28,578)
Other comprehensive income (loss):
Unrealized income (loss) on marketable securities, net of tax	(94)	21	48
Income (loss) on marketable securities reclassified into earnings, net of tax	76	5	(27)
Total	(18)	26	21
Unrealized income (loss) on derivative instruments, net of tax	4,043	3,510	(7,531)
Realized income on derivative instruments, net of tax	6,052	0	0
Loss (income) on derivative instruments reclassified into earnings, net of tax	(257)	(352)	3,741
Total	9,838	3,158	(3,790)
Total other comprehensive income (loss)	9,820	3,184	(3,769)
Comprehensive loss	$ (84,190)	$ (75,580)	$ (32,347)