Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Total
Beginning balance at Dec. 31, 2020	$ 9	$ 16,853	$ 29,010	$ 45,872
Beginning balance (in shares) at Dec. 31, 2020	8,660,334
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	$ 0	981	0	981
Stock options exercised	$ 0	166	0	166
Stock options exercised (in shares)	55,776
Net income	$ 0	0	5,291	5,291
Ending balance at Mar. 31, 2021	$ 9	18,000	34,301	52,310
Ending balance (in shares) at Mar. 31, 2021	8,716,110
Beginning balance at Dec. 31, 2021	$ 13	54,836	60,593	115,442
Beginning balance (in shares) at Dec. 31, 2021	12,772,010
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation expense	$ 0	39	0	39
Stock options exercised	$ 0	40	0	40
Stock options exercised (in shares)	16,800
Net income	$ 0	0	9,434	9,434
Ending balance at Mar. 31, 2022	$ 13	$ 54,915	$ 70,027	$ 124,955
Ending balance (in shares) at Mar. 31, 2022	12,788,810