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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)					$ 8,374	$ (26,965)
Opening balance (Shares) at Dec. 31, 2020		477,297	7,537,879	11,862,043	419,124
Share-based compensation	126					126
Net loss	(26,997)						(26,997)
Closing balance at Mar. 31, 2021		$ 1,067	$ 16,333	$ 39,253
Closing balance at Mar. 31, 2021	(45,462)					8,500	(53,962)
Closing balance (Shares) at Mar. 31, 2021		477,297	7,537,879	11,862,043	419,124
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	(583)							(583)
Share-based compensation	618					618
Net loss	(9,129)						(9,129)
Closing balance at Mar. 31, 2022	$ 216,089				$ 4	$ 353,599	$ (136,700)	$ (814)
Closing balance (Shares) at Mar. 31, 2022					40,473,270

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