CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Deficit [Member]
Balance at Dec. 31, 2020	$ 396,553	$ 26	$ 540,343	$ (143,816)
Balance (in shares) at Dec. 31, 2020		26,192
Net loss	(56,346)			(56,346)
Issuance of common stock related to acquired in-process research and development	5,000		5,000
Issuance of common stock related to acquired in-process research and development (in shares)		75
Share-based compensation expense	6,987		6,987
Issuance of common stock upon exercise of stock options	413		413
Issuance of common stock upon exercise of stock options (in shares)		52
Balance at Mar. 31, 2021	352,607	$ 26	552,743	(200,162)
Balance (in shares) at Mar. 31, 2021		26,319
Balance at Dec. 31, 2020	396,553	$ 26	540,343	(143,816)
Balance (in shares) at Dec. 31, 2020		26,192
Net loss	(165,011)
Balance at Sep. 30, 2021	259,126	$ 26	567,927	(308,827)
Balance (in shares) at Sep. 30, 2021		26,349
Balance at Mar. 31, 2021	352,607	$ 26	552,743	(200,162)
Balance (in shares) at Mar. 31, 2021		26,319
Net loss	(54,581)			(54,581)
Share-based compensation expense	7,540		7,540
Issuance of common stock upon exercise of stock options	82		82
Issuance of common stock upon exercise of stock options (in shares)		8
Balance at Jun. 30, 2021	305,648	$ 26	560,365	(254,743)
Balance (in shares) at Jun. 30, 2021		26,327
Net loss	(54,084)			(54,084)
Share-based compensation expense	6,870		6,870
Issuance of common stock upon exercise of stock options	177		177
Issuance of common stock upon exercise of stock options (in shares)		9
Issuance of common stock under equity plans	515		515
Issuance of common stock under equity plans (in shares)		13
Balance at Sep. 30, 2021	259,126	$ 26	567,927	(308,827)
Balance (in shares) at Sep. 30, 2021		26,349
Balance at Dec. 31, 2021	228,211	$ 26	575,675	(347,490)
Balance (in shares) at Dec. 31, 2021		26,372
Net loss	(51,169)			(51,169)
Share-based compensation expense	7,371		7,371
Issuance of common stock upon exercise of stock options	336		336
Issuance of common stock upon exercise of stock options (in shares)		35
Balance at Mar. 31, 2022	184,749	$ 26	583,382	(398,659)
Balance (in shares) at Mar. 31, 2022		26,407
Balance at Dec. 31, 2021	228,211	$ 26	575,675	(347,490)
Balance (in shares) at Dec. 31, 2021		26,372
Net loss	(107,998)
Balance at Sep. 30, 2022	145,667	$ 26	601,129	(455,488)
Balance (in shares) at Sep. 30, 2022		26,492
Balance at Mar. 31, 2022	184,749	$ 26	583,382	(398,659)
Balance (in shares) at Mar. 31, 2022		26,407
Net loss	(21,563)			(21,563)
Share-based compensation expense	7,274		7,274
Issuance of common stock upon exercise of stock options	257		257
Issuance of common stock upon exercise of stock options (in shares)		27
Balance at Jun. 30, 2022	170,717	$ 26	590,913	(420,222)
Balance (in shares) at Jun. 30, 2022		26,434
Net loss	(35,266)			(35,266)
Share-based compensation expense	9,436		9,436
Issuance of common stock upon exercise of stock options	369		369
Issuance of common stock upon exercise of stock options (in shares)		36
Issuance of common stock under equity plans	411		411
Issuance of common stock under equity plans (in shares)		22
Balance at Sep. 30, 2022	$ 145,667	$ 26	$ 601,129	$ (455,488)
Balance (in shares) at Sep. 30, 2022		26,492