Consolidated Statements of Stockholders' Equity (Deficit) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Preferred Stock Shares issuable upon conversion of preferred stock [Member]	Accumulated Other Comprehensive Gain (Loss)
Beginning Balance at Dec. 31, 2021	$ 94,371	$ 4	$ 254,592	$ (165,677)	$ 5,452
Beginning Balance, shares at Dec. 31, 2021		37,425			10
Exercise of warrants and stock options to purchase common stock	225		225
Issuance of common stock upon exercise of stock options and from employee stock plan		155
Issuance of common stock through "at the market" offering net shares		564
Issuance of common stock through "at the market" offering, net, Value	2,331		2,331
Issuance of common stock upon vesting of restricted stock units		197
Vesting of early exercise of stock options, shares		4
Vesting of early exercise of stock options,Value	3		3
Share-based compensation	13,548		13,548
Unrealized gain (loss) on short-term investments	(178)					$ (178)
Net Income (Loss)	(49,197)			(49,197)
Ending Balance at Dec. 31, 2022	61,103	$ 4	270,699	(214,874)	$ 5,452	(178)
Ending Balance, shares at Dec. 31, 2022		38,345			10
Exercise of warrants and stock options to purchase common stock	$ 139		139
Issuance of common stock upon exercise of stock options and from employee stock plan	17	192
Issuance of common stock through "at the market" offering net shares		372
Issuance of common stock through "at the market" offering, net, Value	$ 299		299
Issuance of common stock upon vesting of restricted stock units		185
Share-based compensation	7,649		7,649
Unrealized gain (loss) on short-term investments	187					187
Net Income (Loss)	(51,058)			(51,058)
Ending Balance at Dec. 31, 2023	$ 18,319	$ 4	$ 278,786	$ (265,932)	$ 5,452	$ 9
Ending Balance, shares at Dec. 31, 2023		39,094			10