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 Jun. 30, 2023	0
Ending balance at Jun. 30, 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	(15,680)						(15,680)
Vesting of restricted stock units, net of withholding for tax and shares issued under employee stock purchase plan (in shares)		18,186
Vesting of restricted stock units, net of withholding tax and shares issued under employee stock purchase plan	11			11
Stock-based compensation	1,732			1,732
Redemption of convertible preferred stock	(149)						(149)
Issuance of common stock in at-the-market offering, net of issuance costs (in shares)			34,589
Issuance of common stock in at-the-market offering, net of issuance costs	156				$ 156
Unrealized losses from marketable securities	0
Ending balance (shares) at Jun. 30, 2023		3,282,479
Ending balance at Jun. 30, 2023	$ 17,272	$ 0		695,836		0	(678,564)
Beginning balance (in shares) at Mar. 31, 2023	0
Beginning balance at Mar. 31, 2023	$ 0
Ending balance (in shares) at Jun. 30, 2023	0
Ending balance at Jun. 30, 2023	$ 0
Beginning balance (shares) at Mar. 31, 2023		3,271,282
Beginning balance at Mar. 31, 2023	26,431	$ 0		694,937		0	(668,506)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(10,058)						(10,058)
Vesting of restricted stock units, net of withholding for tax and shares issued under employee stock purchase plan (in shares)		11,197
Vesting of restricted stock units, net of withholding tax and shares issued under employee stock purchase plan	23			23
Stock-based compensation	876			876
Unrealized losses from marketable securities	0
Ending balance (shares) at Jun. 30, 2023		3,282,479
Ending balance at Jun. 30, 2023	$ 17,272	$ 0		695,836		0	(678,564)
Beginning balance (in shares) at Dec. 31, 2023	0
Beginning balance at Dec. 31, 2023	$ 0
Ending balance (in shares) at Jun. 30, 2024	0
Ending balance at Jun. 30, 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	(15,655)						(15,655)
Vesting of restricted stock units, net of withholding for tax and shares issued under employee stock purchase plan (in shares)		10,686
Vesting of restricted stock units, net of withholding tax and shares issued under employee stock purchase plan	3			3
Stock-based compensation	1,870			1,870
Cashless exercise of pre-funded warrants (shares)		426,550
Unrealized losses from marketable securities	$ (84)					(84)
Ending balance (shares) at Jun. 30, 2024	14,536,124	14,536,124
Ending balance at Jun. 30, 2024	$ 74,869	$ 1		781,917		(58)	(706,991)
Beginning balance (in shares) at Mar. 31, 2024	0
Beginning balance at Mar. 31, 2024	$ 0
Ending balance (in shares) at Jun. 30, 2024	0
Ending balance at Jun. 30, 2024	$ 0
Beginning balance (shares) at Mar. 31, 2024		14,301,688
Beginning balance at Mar. 31, 2024	83,370	$ 1		781,024		(70)	(697,585)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(9,406)						(9,406)
Vesting of restricted stock units, net of withholding for tax and shares issued under employee stock purchase plan (in shares)		7,877
Vesting of restricted stock units, net of withholding tax and shares issued under employee stock purchase plan	8			8
Stock-based compensation	885			885
Cashless exercise of pre-funded warrants (shares)		226,559
Unrealized losses from marketable securities	$ 12					12
Ending balance (shares) at Jun. 30, 2024	14,536,124	14,536,124
Ending balance at Jun. 30, 2024	$ 74,869	$ 1		$ 781,917		$ (58)	$ (706,991)