Unaudited Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net loss	$ (32,948)	$ (24,323)	$ (68,604)	$ (55,753)
Other comprehensive income (loss):
Unrealized income (loss) on marketable securities, net of tax	(7)	(137)	(3)	47
Income on marketable securities reclassified into earnings, net of tax	1	15	2	27
Total	(6)	(122)	(1)	74
Unrealized income (loss) on derivative instruments, net of tax	1,657	535	(1,492)	1,137
Loss (income) on derivative instruments reclassified into earnings, net of tax	(2,749)	2,832	(4,785)	2,775
Total	(1,092)	3,367	(6,277)	3,912
Total other comprehensive income (loss)	(1,098)	3,245	(6,278)	3,986
Comprehensive loss	$ (34,046)	$ (21,078)	$ (74,882)	$ (51,767)