CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN MEZZANINE EQUITY AND STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common stock	Common stock At-the-market Offering	Additional paid-in capital	Additional paid-in capital At-the-market Offering	Accumulated other comprehensive Income (loss)	Accumulated deficit
Beginning balance (in shares) at Dec. 31, 2022	3,000
Beginning balance at Dec. 31, 2022	$ 211
Increase (Decrease) in Temporary Equity [Roll Forward]
Redemption of convertible preferred stock (in shares)	(3,000)
Redemption of convertible preferred stock	$ (211)
Ending balance (in shares) at Mar. 31, 2023	0
Ending balance at Mar. 31, 2023	$ 0
Beginning balance (shares) at Dec. 31, 2022		3,229,704
Beginning balance at Dec. 31, 2022	31,202	$ 0		$ 693,937		$ 0	$ (662,735)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(5,622)						(5,622)
Redemption of convertible preferred stock	(149)						(149)
Vesting of restricted stock units, net of withholding tax and shares issued under employee stock purchase plan (in shares)		6,989
Vesting of restricted stock units, net of withholding tax and shares issued under employee stock purchase plan	(12)			(12)
Stock-based compensation	856			856
Issuance of common stock under at-the-market offering, net of issuance costs (in shares)			34,589
Issuance of common stock under at-the-market offering, net of issuance costs	156				$ 156
Unrealized losses from marketable securities	0
Ending balance (shares) at Mar. 31, 2023		3,271,282
Ending balance at Mar. 31, 2023	$ 26,431	$ 0		694,937		0	(668,506)
Beginning balance (in shares) at Dec. 31, 2023	0
Beginning balance at Dec. 31, 2023	$ 0
Ending balance (in shares) at Mar. 31, 2024	0
Ending balance at Mar. 31, 2024	$ 0
Beginning balance (shares) at Dec. 31, 2023	14,098,888	14,098,888
Beginning balance at Dec. 31, 2023	$ 88,735	$ 1		780,044		26	(691,336)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(6,249)						(6,249)
Vesting of restricted stock units, net of withholding tax and shares issued under employee stock purchase plan (in shares)		2,809
Vesting of restricted stock units, net of withholding tax and shares issued under employee stock purchase plan	(5)			(5)
Stock-based compensation	985			985
Cashless exercise of pre-funded warrants (in shares)		199,991
Unrealized losses from marketable securities	$ (96)					(96)
Ending balance (shares) at Mar. 31, 2024	14,301,688	14,301,688
Ending balance at Mar. 31, 2024	$ 83,370	$ 1		$ 781,024		$ (70)	$ (697,585)