Condensed Consolidated Statements of Stockholders’ Equity - USD ($) $ in Thousands	Total	As Originally Reported	Retrospective Application of the Recapitalization	Prior Year Adjustment of Warrants	Preferred Stock Series A Convertible Preferred Stock (Pre-Combination)	Preferred Stock Series A Convertible Preferred Stock (Pre-Combination) As Originally Reported	Preferred Stock Series A Convertible Preferred Stock (Pre-Combination) Retrospective Application of the Recapitalization	Preferred Stock Series B Convertible Preferred Stock (Pre-Combination)	Preferred Stock Series B Convertible Preferred Stock (Pre-Combination) As Originally Reported	Preferred Stock Series B Convertible Preferred Stock (Pre-Combination) Retrospective Application of the Recapitalization	Preferred Stock Series B-1 Convertible Preferred Stock (Pre-Combination)	Preferred Stock Series B-1 Convertible Preferred Stock (Pre-Combination) As Originally Reported	Preferred Stock Series B-1 Convertible Preferred Stock (Pre-Combination) Retrospective Application of the Recapitalization	Common Stock (Pre-Combination)	Common Stock (Pre-Combination) As Originally Reported	Common Stock (Pre-Combination) Retrospective Application of the Recapitalization	Common Stock (Post-Combination)	Common Stock (Post-Combination) As Originally Reported	Common Stock (Post-Combination) Retrospective Application of the Recapitalization	Additional Paid in Capital	Additional Paid in Capital As Originally Reported	Additional Paid in Capital Retrospective Application of the Recapitalization	Additional Paid in Capital Prior Year Adjustment of Warrants	Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss As Originally Reported	Accumulated Other Comprehensive Loss Retrospective Application of the Recapitalization	Accumulated Deficit	Accumulated Deficit As Originally Reported	Accumulated Deficit Retrospective Application of the Recapitalization	Accumulated Deficit Prior Year Adjustment of Warrants
Balance (in shares) at Dec. 31, 2019					0	8,772,852	(8,772,852)	0	1,375,440	(1,375,440)	0	1,375,440	(1,375,440)	0	34,252,578	(34,252,578)	137,911,975	0	137,911,975
Balance at Dec. 31, 2019	$ 76,246	$ 76,246	$ 0		$ 0	$ 1	$ (1)	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 3	$ (3)	$ 14	$ 0	$ 14	$ 240,464	$ 240,474	$ (10)		$ (216)	$ (216)	$ 0	$ (164,016)	$ (164,016)	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation	21																			21
Other comprehensive income (loss), net of tax	(2)																							(2)
Net loss	(23,385)																										(23,385)
Balance (in shares) at Mar. 31, 2020					0			0			0			0			137,911,975
Balance at Mar. 31, 2020	52,880				$ 0			$ 0			$ 0			$ 0			$ 14			240,485				(218)			(187,401)
Balance (in shares) at Dec. 31, 2019					0	8,772,852	(8,772,852)	0	1,375,440	(1,375,440)	0	1,375,440	(1,375,440)	0	34,252,578	(34,252,578)	137,911,975	0	137,911,975
Balance at Dec. 31, 2019	76,246	$ 76,246	$ 0		$ 0	$ 1	$ (1)	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 3	$ (3)	$ 14	$ 0	$ 14	240,464	$ 240,474	$ (10)		(216)	$ (216)	$ 0	(164,016)	$ (164,016)	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive income (loss), net of tax	5
Net loss	(38,407)
Balance (in shares) at Sep. 30, 2020					0			0			0			0			168,713,296
Balance at Sep. 30, 2020	285,502				$ 0			$ 0			$ 0			$ 0			$ 17			489,920				(211)			(204,224)
Balance (in shares) at Mar. 31, 2020					0			0			0			0			137,911,975
Balance at Mar. 31, 2020	52,880				$ 0			$ 0			$ 0			$ 0			$ 14			240,485				(218)			(187,401)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of convertible preferred stock, net of issuance cost (in shares)																	1,951,219
Issuance of convertible preferred stock, net of issuance cost	19,919																			19,919
Share-based compensation	135																			135
Other comprehensive income (loss), net of tax	(32)																							(32)
Net loss	(9,727)																										(9,727)
Balance (in shares) at Jun. 30, 2020					0			0			0			0			139,863,194
Balance at Jun. 30, 2020	63,175				$ 0			$ 0			$ 0			$ 0			$ 14			260,539				(250)			(197,128)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Recapitalization transaction, net of transaction cost (in shares)																	29,025,846
Recapitalization transaction, net of transaction cost	229,299																$ 3			229,296
Repurchase of common stock (in shares)																	(175,744)
Repurchase of common stock	(1,801)																										(1,801)
Share-based compensation	85																			85
Other comprehensive income (loss), net of tax	39																							39
Net loss	(5,295)																										(5,295)
Balance (in shares) at Sep. 30, 2020					0			0			0			0			168,713,296
Balance at Sep. 30, 2020	285,502				$ 0			$ 0			$ 0			$ 0			$ 17			489,920				(211)			(204,224)
Balance (in shares) at Dec. 31, 2020					0			0			0			0			175,912,194
Balance at Dec. 31, 2020	340,823			$ 0	$ 0			$ 0			$ 0			$ 0			$ 18			656,717			$ (1,585)	(230)			(315,682)			$ 1,585
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock under warrant exercises (in shares)																	6,973,882
Issuance of common stock under warrant exercises	80,200																$ 1			80,199
Issuance of common stock under employee stock award plans, net of taxes (in shares)																	6,798,504
Issuance of common stock under employee stock award plans, net of taxes	(37)																			(37)
Share-based compensation	11,530																			11,530
Other comprehensive income (loss), net of tax	(22)																							(22)
Net loss	(40,817)																										(40,817)
Balance (in shares) at Mar. 31, 2021					0			0			0			0			189,684,580
Balance at Mar. 31, 2021	391,677				$ 0			$ 0			$ 0			$ 0			$ 19			746,824				(252)			(354,914)
Balance (in shares) at Dec. 31, 2020					0			0			0			0			175,912,194
Balance at Dec. 31, 2020	340,823			$ 0	$ 0			$ 0			$ 0			$ 0			$ 18			656,717			$ (1,585)	(230)			(315,682)			$ 1,585
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other comprehensive income (loss), net of tax	(3)
Net loss	(174,766)
Balance (in shares) at Sep. 30, 2021					0			0			0			0			195,922,639
Balance at Sep. 30, 2021	327,634				$ 0			$ 0			$ 0			$ 0			$ 20			816,710				(233)			(488,863)
Balance (in shares) at Mar. 31, 2021					0			0			0			0			189,684,580
Balance at Mar. 31, 2021	391,677				$ 0			$ 0			$ 0			$ 0			$ 19			746,824				(252)			(354,914)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock under warrant exercises (in shares)																	1,929
Issuance of common stock under warrant exercises	22																			22
Issuance of common stock under employee stock award plans, net of taxes (in shares)																	5,541,305
Issuance of common stock under employee stock award plans, net of taxes	0																$ 1			(1)
Share-based compensation	53,195																			53,195
Other comprehensive income (loss), net of tax	36																							36
Net loss	(79,237)																										(79,237)
Balance (in shares) at Jun. 30, 2021					0			0			0			0			195,227,814
Balance at Jun. 30, 2021	365,693				$ 0			$ 0			$ 0			$ 0			$ 20			800,040				(216)			(434,151)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock under warrant exercises (in shares)																	2,250
Issuance of common stock under warrant exercises	25																			25
Issuance of common stock under employee stock award plans, net of taxes (in shares)																	692,575
Issuance of common stock under employee stock award plans, net of taxes	0
Share-based compensation	16,645																			16,645
Other comprehensive income (loss), net of tax	(17)																							(17)
Net loss	(54,712)																										(54,712)
Balance (in shares) at Sep. 30, 2021					0			0			0			0			195,922,639
Balance at Sep. 30, 2021	$ 327,634				$ 0			$ 0			$ 0			$ 0			$ 20			$ 816,710				$ (233)			$ (488,863)