Condensed Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Statement Of Cash Flows [Abstract]
Receivable from related party	$ 326	$ (2,504)
Other current liabilities to related party	0	1,869
Deferred revenue from related party	(23,133)	193,140
Other long-term liabilities to related party	0	7,344
Proceeds from issuance of common stock from a related party	$ 220,235	$ 164,207