Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Total
Beginning Balance at Dec. 31, 2020	$ 3	$ 247,417	$ (228,234)	$ 19,186
Beginning Balance, (in shares) at Dec. 31, 2020	945,276
Share-based compensation expense		52		52
Net loss			(2,223)	(2,223)
Ending Balance at Mar. 31, 2021	$ 3	255,978	(230,457)	25,524
Ending Balance, (in shares) at Mar. 31, 2021	1,370,593
Beginning Balance at Dec. 31, 2021	$ 3	256,241	(238,129)	$ 18,115
Beginning Balance, (in shares) at Dec. 31, 2021	1,370,595			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			1,370,595