Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Basic and diluted earnings
Net income (loss)	$ (191)	$ 142
Less: Preferred stock dividends	(100)	(100)
Net income (loss) applicable to common stockholders	$ (291)	$ 42
Weighted average common shares outstanding - basic	6,610	6,602
Dilutive potential common shares from stock options, restricted stock units, and convertible preferred stock	0	0
Weighted average common shares outstanding - diluted	6,610	6,602
Earnings (loss) per share:
Earnings (loss) per common share, basic	$ (0.04)	$ 0.01
Earnings (loss) per common share, diluted	$ (0.04)	$ 0.01
Series A Convertible Preferred Stock
Earnings (loss) per share:
Shares subject to anti-dilutive stock options and restricted stock units excluded from calculation	400	400
Shares subject to anti-dilutive Series A Convertible Preferred Stock excluded from calculation	400	400