Warrants (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended			9 Months Ended
	Jan. 31, 2021	Dec. 31, 2020	Dec. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Equity [Abstract]
Proceeds from exercise of stock warrants, net of issuance costs			$ 140,800	$ 16,257	$ 0
Warrants exercised (shares)			15,786,127
Common stock issued for warrants exercised (shares)	371,535		15,414,592
Proceeds not yet received			$ 12,000
Warrants automatically redeemed (shares)	281,065
Redemption price of warrants (usd per share)	$ 0.01
Warrants forfeited (shares)		3,118,445
Warrants exercised but not settled		$ 4,300	$ 4,300