Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Net loss	$ (179,087)	$ (323,466)	$ (291,276)
Other comprehensive income (loss), net of taxes:
Unrealized gain (loss) on available-for-sale securities	(23)	14	26
Change in derivative instruments designated and qualifying as cash flow hedges	(6,896)	(6,085)	2,098
Other comprehensive income (loss), net of taxes	(6,919)	(6,071)	2,124
Comprehensive loss	(186,006)	(329,537)	(289,152)
Less: Comprehensive loss attributable to noncontrolling interests and redeemable noncontrolling interests	(28,425)	(24,842)	(15,905)
Comprehensive loss attributable to Class A and Class B stockholders	$ (157,581)	$ (304,695)	$ (273,247)