Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders’ Equity (Deficit) - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Loss	Series 1 Preferred Preferred Stock
Preferred stock, beginning balance (in shares) at Dec. 31, 2020							452,000
Preferred stock, beginning balance at Dec. 31, 2020							$ 18,036
Preferred stock, ending balance (in shares) at Dec. 31, 2021							452,000
Preferred stock, ending balance at Dec. 31, 2021	$ 18,036						$ 18,036
Balance, beginning of period (in shares) at Dec. 31, 2020		8,385,650	67,746
Balance, beginning of period at Dec. 31, 2020	(2,497)	$ 84	$ (5,056)	$ 543,561	$ (540,747)	$ (339)
Increase (Decrease) in Stockholders' Equity
Share-based compensation	3,439			3,439
Issuance of common stock upon vesting of restricted stock units (in shares)		111,375
Issuance of common stock upon vesting of restricted stock units	0	$ 1		(1)
Issuance of common stock and pre-funded warrants exercise, net of issuance costs (in shares)		0
Issuance of common stock and pre-funded warrants exercise, net of issuance costs	32,908			32,908
Extinguishment of private option liability	249			249
Comprehensive loss	$ (9,704)				(9,705)	1
Balance, end of period (in shares) at Dec. 31, 2021	8,429,279	8,497,025	67,746
Balance, end of period at Dec. 31, 2021	$ 24,395	$ 85	$ (5,056)	580,156	(550,452)	(338)
Preferred stock, ending balance (in shares) at Dec. 31, 2022							452,000
Preferred stock, ending balance at Dec. 31, 2022	18,036						$ 18,036
Increase (Decrease) in Stockholders' Equity
Share-based compensation	2,609			2,609
Issuance of common stock upon vesting of restricted stock units (in shares)		128,472
Issuance of common stock upon vesting of restricted stock units	0	$ 1		(1)
Issuance of common stock and pre-funded warrants exercise, net of issuance costs (in shares)		56,950
Issuance of common stock and pre-funded warrants exercise, net of issuance costs	0	$ 1		(1)
Comprehensive loss	$ (24,989)				(24,973)	(16)
Balance, end of period (in shares) at Dec. 31, 2022	8,614,701	8,682,447	67,746
Balance, end of period at Dec. 31, 2022	$ 2,015	$ 87	$ (5,056)	$ 582,763	$ (575,425)	$ (354)