Condensed Consolidated Statements of Stockholders' Equity (Deficit) (Unaudited) - USD ($) $ in Thousands	Total	Common Stock [Member]	Preferred Stock [Member] Convertible preferred stock	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive Loss	Accumulated Deficit [Member]
Beginning Balance at Dec. 31, 2021	$ 94,371	$ 4	$ 5,452	$ 254,592		$ (165,677)
Beginning Balance, shares at Dec. 31, 2021		37,425	10
Issuance of common stock upon exercise of stock options	7			7
Issuance of common stock upon exercise of stock options, shares		7
Issuance of common stock upon vesting of restricted stock units		53
Issuance of common stock upon vesting of early exercised stock options, shares		1
Issuance of common stock upon vesting of early exercised stock options ,Value	1			1
Share-based compensation	1,772			1,772
Unrealized loss on short-term investments	0
Net loss	(10,546)					(10,546)
Ending Balance at Mar. 31, 2022	85,605	$ 4	$ 5,452	256,372		(176,223)
Ending Balance, shares at Mar. 31, 2022		37,486	10
Beginning Balance at Dec. 31, 2022	61,103	$ 4	$ 5,452	270,699	$ (178)	(214,874)
Beginning Balance, shares at Dec. 31, 2022		38,345	10
Issuance of common stock upon exercise of stock options	16			16
Issuance of common stock upon exercise of stock options, shares		18
Issuance of common stock upon vesting of restricted stock units		48
Share-based compensation	2,112			2,112
Unrealized loss on short-term investments	91				91
Net loss	(12,209)					(12,209)
Ending Balance at Mar. 31, 2023	$ 51,113	$ 4	$ 5,452	$ 272,827	$ (87)	$ (227,083)
Ending Balance, shares at Mar. 31, 2023		38,411	10