Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Total
Beginning Balance at Dec. 31, 2021	$ 3	$ 256,241	$ (238,129)	$ 18,115
Beginning Balance, (in shares) at Dec. 31, 2021	1,370,595
Share-based compensation expense		56		56
Net loss			(2,655)	(2,655)
Ending Balance at Mar. 31, 2022	$ 3	256,297	(240,784)	15,516
Ending Balance, (in shares) at Mar. 31, 2022	1,370,595
Beginning Balance at Dec. 31, 2022	$ 3	264,362	(248,619)	$ 15,746
Beginning Balance, (in shares) at Dec. 31, 2022	2,429,446			2,429,446
Share-based compensation expense		62		$ 62
Issuance of common stock upon exercise of warrants (in shares)	676,000
Net loss			(2,332)	(2,332)
Ending Balance at Mar. 31, 2023	$ 3	$ 264,424	$ (250,951)	$ 13,476
Ending Balance, (in shares) at Mar. 31, 2023	3,105,446			3,105,446