Condensed Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Cumulative Effect Period Of Adoption Adjustment	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income	Accumulated Deficit	Accumulated Deficit Cumulative Effect Period Of Adoption Adjustment
Balance at Dec. 31, 2021	$ 44,104		$ 28	$ 293,621	$ 11	$ (249,556)
Balance, shares at Dec. 31, 2021			28,822,283
Issuance of common stock upon exercise of stock options	3			3
Issuance of common stock upon exercise of stock options, shares			5,166
Vesting of early exercised stock options	39			39
Stock-based compensation expense	1,523			1,523
Net loss	(10,925)					(10,925)
Balance at Mar. 31, 2022	34,744		$ 28	295,186	11	(260,481)
Balance, shares at Mar. 31, 2022			28,827,449
Balance at Dec. 31, 2022	17,181	$ 155	$ 29	300,809	11	(283,668)	$ 155
Balance, shares at Dec. 31, 2022			29,816,161
Accounting Standards Update [Extensible List]		ASU 2016 -13					ASU 2016 -13
Proceeds from issuance of common stock, Share Purchase Agreement, net	$ 26,774		$ 147	26,627
Proceeds from issuance of common stock, Share Purchase Agreement, net, shares			146,627,565
Issuance of common stock upon release of RSUs, shares			356,487
Issuance of common stock upon exercise of stock options, shares	6		6
Vesting of early exercised stock options	$ 30			30
Stock-based compensation expense	1,274			1,274
Net loss	(11,343)					(11,343)
Balance at Mar. 31, 2023	$ 34,071		$ 176	$ 328,740	$ 11	$ (294,856)
Balance, shares at Mar. 31, 2023			176,800,219