Condensed Statements of Changes in Convertible Preferred Stock and Stockholders' Equity (Deficit) - USD ($) $ in Thousands	Total	Series A Convertible Preferred Stock [Member]	Series A-1 Convertible Preferred Stock [Member]	Series B Convertible Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Loss
Opening balance at Dec. 31, 2020		$ 1,067	$ 16,333	$ 39,253
Opening balance at Dec. 31, 2020	$ (18,591)				$ 0	$ 8,374	$ (26,965)
Opening balance (Shares) at Dec. 31, 2020		477,297	7,537,879	11,862,043	419,124
Stock-based compensation	253					253	0
Issuance of milestone shares for cash, net of issuance costs				$ 30,031
Issuance of milestone shares for cash, net of issuance costs (Shares)				7,908,027
Exercise of preferred stock warrant			$ 1,250
Exercise of preferred stock warrant (shares)			447,426
Reclassification of preferred stock tranche rights liability upon issuance of milestone shares				$ 81,190
Reclassification of warrant liability upon exercise of preferred stock warrant	5,380		$ 5,380
Exercise of common stock warrants	614					614
Exercise of common stock warrants (Shares)					137,446
Net loss	(88,355)						(88,355)
Closing balance at Jun. 30, 2021		$ 1,067	$ 22,963	$ 150,474
Closing balance at Jun. 30, 2021	(106,079)				$ 0	9,241	(115,320)
Closing balance (Shares) at Jun. 30, 2021		477,297	7,985,305	19,770,070	556,570
Opening balance at Mar. 31, 2021		$ 1,067	$ 16,333	$ 39,253
Opening balance at Mar. 31, 2021	(45,462)				$ 0	8,500	(53,962)
Opening balance (Shares) at Mar. 31, 2021		477,297	7,537,879	11,862,043	419,124
Stock-based compensation	127					127	0
Issuance of milestone shares for cash, net of issuance costs				$ 30,031
Issuance of milestone shares for cash, net of issuance costs (Shares)				7,908,027
Exercise of preferred stock warrant			$ 1,250
Exercise of preferred stock warrant (shares)			447,426
Reclassification of preferred stock tranche rights liability upon issuance of milestone shares				$ 81,190
Reclassification of warrant liability upon exercise of preferred stock warrant			$ 5,380
Exercise of common stock warrants	614					614
Exercise of common stock warrants (Shares)					137,446
Net loss	(61,358)						(61,358)
Closing balance at Jun. 30, 2021		$ 1,067	$ 22,963	$ 150,474
Closing balance at Jun. 30, 2021	(106,079)				$ 0	9,241	(115,320)
Closing balance (Shares) at Jun. 30, 2021		477,297	7,985,305	19,770,070	556,570
Opening balance at Dec. 31, 2021	225,183				$ 4	352,981	(127,571)	$ (231)
Opening balance (Shares) at Dec. 31, 2021					40,473,270
Unrealized loss on marketable securities	(734)							(734)
Stock options exercised for cash	$ 17					17
Stock options exercised for cash, Shares	29,982				23,242
Cashless stock options exercise (shares)					4,746
Stock-based compensation	$ 1,333				$ 0	1,333
Net loss	(19,280)						(19,280)
Closing balance at Jun. 30, 2022	206,519				$ 4	354,331	(146,851)	(965)
Closing balance (Shares) at Jun. 30, 2022					40,501,258
Opening balance at Mar. 31, 2022	216,089				$ 4	353,599	(136,700)	(814)
Opening balance (Shares) at Mar. 31, 2022					40,473,270
Unrealized loss on marketable securities	(151)							(151)
Stock options exercised for cash	17					17
Stock options exercised for cash, Shares					23,242
Cashless stock options exercise (shares)					4,746
Stock-based compensation	715				$ 0	715
Net loss	(10,151)						(10,151)
Closing balance at Jun. 30, 2022	$ 206,519				$ 4	$ 354,331	$ (146,851)	$ (965)
Closing balance (Shares) at Jun. 30, 2022					40,501,258