Condensed Consolidated Statements of Stockholders' Equity (Deficit) (Unaudited) - USD ($) $ in Thousands	Total	Preferred Stock [Member] Convertible Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Accumulated Deficit [Member]
Beginning balance at Dec. 31, 2022	$ 61,103	$ 5,452	$ 4	$ 270,699	$ (178)	$ (214,874)
Beginning balance, shares at Dec. 31, 2022		10	38,345
Issuance of common stock upon exercise of stock options and from employee stock plan	16			16
Issuance of common stock upon exercise of stock options and from employee stock plan, shares			18
Issuance of common stock upon vesting of restricted stock units			48
Share-based compensation	2,112			2,112
Unrealized gain (loss) on short-term investments	91				91
Net Income (Loss)	(12,209)					(12,209)
Ending balance at Mar. 31, 2023	51,113	$ 5,452	$ 4	272,827	(87)	(227,083)
Ending balance, shares at Mar. 31, 2023		10	38,411
Beginning balance at Dec. 31, 2022	61,103	$ 5,452	$ 4	270,699	(178)	(214,874)
Beginning balance, shares at Dec. 31, 2022		10	38,345
Unrealized gain (loss) on short-term investments	63
Net Income (Loss)	(24,693)
Ending balance at Jun. 30, 2023	40,782	$ 5,452	$ 4	275,008	(115)	(239,567)
Ending balance, shares at Jun. 30, 2023		10	38,580
Beginning balance at Mar. 31, 2023	51,113	$ 5,452	$ 4	272,827	(87)	(227,083)
Beginning balance, shares at Mar. 31, 2023		10	38,411
Issuance of common stock through "at the market" offering, net	127			127
Issuance of common stock through "at the market" offering, net, shares			57
Issuance of common stock upon exercise of stock options and from employee stock plan	77			77
Issuance of common stock upon exercise of stock options and from employee stock plan, shares			64
Issuance of common stock upon vesting of restricted stock units			48
Share-based compensation	1,977			1,977
Unrealized gain (loss) on short-term investments	(28)				(28)
Net Income (Loss)	(12,484)					(12,484)
Ending balance at Jun. 30, 2023	40,782	$ 5,452	$ 4	275,008	(115)	(239,567)
Ending balance, shares at Jun. 30, 2023		10	38,580
Beginning balance at Dec. 31, 2023	18,319	$ 5,452	$ 4	278,786	9	(265,932)
Beginning balance, shares at Dec. 31, 2023		10	39,094
Issuance of common stock through "at the market" offering, net	80			80
Issuance of common stock through "at the market" offering, net, shares			138
Issuance of common stock upon vesting of restricted stock units			40
Share-based compensation	1,837			1,837
Unrealized gain (loss) on short-term investments	(15)				(15)
Net Income (Loss)	(9,141)					(9,141)
Ending balance at Mar. 31, 2024	11,080	$ 5,452	$ 4	280,703	(6)	(275,073)
Ending balance, shares at Mar. 31, 2024		10	39,272
Beginning balance at Dec. 31, 2023	18,319	$ 5,452	$ 4	278,786	9	(265,932)
Beginning balance, shares at Dec. 31, 2023		10	39,094
Unrealized gain (loss) on short-term investments	(14)
Net Income (Loss)	(18,971)
Ending balance at Jun. 30, 2024	2,671	$ 5,452	$ 4	282,123	(5)	(284,903)
Ending balance, shares at Jun. 30, 2024		10	39,416
Beginning balance at Mar. 31, 2024	11,080	$ 5,452	$ 4	280,703	(6)	(275,073)
Beginning balance, shares at Mar. 31, 2024		10	39,272
Issuance of common stock from employee stock plan Shares			110
Issuance of common stock from employee stock plan value	44			44
Issuance of common stock upon vesting of restricted stock units			34
Share-based compensation	1,376			1,376
Unrealized gain (loss) on short-term investments	1				1
Net Income (Loss)	(9,830)					(9,830)
Ending balance at Jun. 30, 2024	$ 2,671	$ 5,452	$ 4	$ 282,123	$ (5)	$ (284,903)
Ending balance, shares at Jun. 30, 2024		10	39,416