CONDENSED CONSOLIDATED STATEMENTS OF CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY (DEFICIT) (UNAUDITED) - USD ($) $ in Thousands	Total	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income [Member]	Accumulated Deficit [Member]
Treasury Stock, Common, Shares			468,751
Balances at Dec. 31, 2021	$ 558,019	$ 11		$ 850,125	$ (8)	$ (292,109)
Balances, shares at Dec. 31, 2021		110,782,909
Treasury stock at Dec. 31, 2021			$ 0
Vesting of restricted common stock from early-exercised options	1			1
Exercise of stock options, shares		50,353
Exercise of stock options	47			47
Repurchase of unvested restricted common stock, shares		(1,158,089)	(1,158,089)
Stock-based compensation expense	1,983			1,983
Retirement of treasury shares, shares			(1,626,840)
Unrealized gain on available-for-sale securities, net of tax	8				8
Net loss	(100,666)					(100,666)
Balances at Mar. 31, 2022	459,392	$ 11		852,156	0	(392,775)
Balances, shares at Mar. 31, 2022		109,675,173
Treasury stock at Mar. 31, 2022			$ 0
Balances at Dec. 31, 2021	558,019	$ 11		850,125	(8)	(292,109)
Balances, shares at Dec. 31, 2021		110,782,909
Treasury stock at Dec. 31, 2021			0
Unrealized gain on available-for-sale securities, net of tax	54
Net loss	(196,743)
Balances at Sep. 30, 2022	377,443	$ 11		866,238	46	(488,852)
Balances, shares at Sep. 30, 2022		108,957,401
Treasury stock at Sep. 30, 2022			$ 0
Treasury Stock, Common, Shares			0
Balances at Mar. 31, 2022	459,392	$ 11		852,156	0	(392,775)
Balances, shares at Mar. 31, 2022		109,675,173
Treasury stock at Mar. 31, 2022			$ 0
Exercise of stock options, shares		98,000
Exercise of stock options	76			76
Repurchase of unvested restricted common stock, shares		(992,648)	(992,648)
Stock-based compensation expense	6,361			6,361
Net loss	(50,990)					(50,990)
Balances at Jun. 30, 2022	414,839	$ 11		858,593	0	(443,765)
Balances, shares at Jun. 30, 2022		108,780,525
Treasury stock at Jun. 30, 2022			$ 0
Treasury Stock, Common, Shares			992,648
Exercise of stock options, shares		125,000
Exercise of stock options	97			97
Stock-based compensation expense	7,399			7,399
Issuance of common stock under the employee stock purchase plan, shares		51,876
Issuance of common stock under the employee stock purchase plan	149			149
Retirement of treasury shares, shares			(992,648)
Unrealized gain on available-for-sale securities, net of tax	46				46
Net loss	(45,087)					(45,087)
Balances at Sep. 30, 2022	377,443	$ 11		866,238	46	(488,852)
Balances, shares at Sep. 30, 2022		108,957,401
Treasury stock at Sep. 30, 2022			$ 0
Treasury Stock, Common, Shares			0
Treasury Stock, Common, Shares			0
Balances at Dec. 31, 2022	355,970	$ 11		889,657	(272)	(533,426)
Balances, shares at Dec. 31, 2022		109,044,046
Treasury stock at Dec. 31, 2022			$ 0
Vesting of restricted common stock from early-exercised options	1			1
Exercise of stock options, shares		423,203
Exercise of stock options	459			459
Repurchase of unvested restricted common stock, shares		(206,802)	(206,802)
Stock-based compensation expense	5,400			5,400
Issuance of common stock under the employee stock purchase plan, shares		55,779
Issuance of common stock under the employee stock purchase plan	83			83
Retirement of treasury shares, shares			(206,802)
Unrealized gain on available-for-sale securities, net of tax	157				157
Net loss	(35,321)					(35,321)
Balances at Mar. 31, 2023	326,749	$ 11		895,600	(115)	(568,747)
Balances, shares at Mar. 31, 2023		109,316,226
Treasury stock at Mar. 31, 2023			$ 0
Balances at Dec. 31, 2022	355,970	$ 11		889,657	(272)	(533,426)
Balances, shares at Dec. 31, 2022		109,044,046
Treasury stock at Dec. 31, 2022			0
Unrealized gain on available-for-sale securities, net of tax	270
Net loss	(124,989)
Balances at Sep. 30, 2023	246,499	$ 11		904,905	(2)	(658,415)
Balances, shares at Sep. 30, 2023		109,846,329
Treasury stock at Sep. 30, 2023			$ 0
Treasury Stock, Common, Shares			0
Balances at Mar. 31, 2023	326,749	$ 11		895,600	(115)	(568,747)
Balances, shares at Mar. 31, 2023		109,316,226
Treasury stock at Mar. 31, 2023			$ 0
Vesting of restricted common stock from early-exercised options	1			1
Exercise of stock options, shares		255,440
Exercise of stock options	215			215
Repurchase of unvested restricted common stock, shares		(46,600)	(46,600)
Stock-based compensation expense	4,677			4,677
Issuance of common stock under the employee stock purchase plan, shares		45,267
Issuance of common stock under the employee stock purchase plan	56			56
Retirement of treasury shares, shares			(46,600)
Unrealized gain on available-for-sale securities, net of tax	93				93
Net loss	(50,228)					(50,228)
Balances at Jun. 30, 2023	281,563	$ 11		900,549	(22)	(618,975)
Balances, shares at Jun. 30, 2023		109,570,333
Treasury stock at Jun. 30, 2023			$ 0
Treasury Stock, Common, Shares			0
Exercise of stock options, shares		230,291
Exercise of stock options	35			35
Stock-based compensation expense	4,264			4,264
Issuance of common stock under the employee stock purchase plan, shares		45,705
Issuance of common stock under the employee stock purchase plan	57			57
Unrealized gain on available-for-sale securities, net of tax	20				20
Net loss	(39,440)					(39,440)
Balances at Sep. 30, 2023	$ 246,499	$ 11		$ 904,905	$ (2)	$ (658,415)
Balances, shares at Sep. 30, 2023		109,846,329
Treasury stock at Sep. 30, 2023			$ 0
Treasury Stock, Common, Shares			0