Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Retained Earnings (Deficit)	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Total
Balance at beginning of period at Dec. 31, 2019	$ 57	$ 113,275	$ 664	$ (2,540)	$ (20,329)	$ 91,127
Balance (in shares) at Dec. 31, 2019	5,668,043
Increase (Decrease) in Stockholders' Equity
Exercise of stock options, including shares tendered related to stock options exercised	$ 1	1,569			(1,358)	212
Exercise of stock options, including shares tendered related to stock options exercised (in shares)	54,930
Sale of common stock	$ 5	23,037				23,042
Sale of common stock (in shares)	557,883
Stock-based compensation expense		532				$ 532
Retirement of treasury stock	$ (6)	(21,681)			21,687
Retirement of treasury stock (in shares)	(617,816)					(617,816)
Total other comprehensive income (loss)				(5,315)		$ (5,315)
Net income (loss)			(10,481)			(10,481)
Balance at end of period at Dec. 31, 2020	$ 57	116,732	(9,817)	(7,855)		99,117
Balance (in shares) at Dec. 31, 2020	5,663,040
Balance at beginning of period at Nov. 30, 2020	$ 63	138,372	(11,798)	(8,051)	(21,687)	96,899
Balance (in shares) at Nov. 30, 2020	6,280,856
Increase (Decrease) in Stockholders' Equity
Stock-based compensation expense		41				41
Retirement of treasury stock	$ (6)	(21,681)			$ 21,687
Retirement of treasury stock (in shares)	(617,816)
Total other comprehensive income (loss)				196		196
Net income (loss)			1,981			1,981
Balance at end of period at Dec. 31, 2020	$ 57	116,732	(9,817)	(7,855)		99,117
Balance (in shares) at Dec. 31, 2020	5,663,040
Increase (Decrease) in Stockholders' Equity
Exercise of stock options, including shares tendered related to stock options exercised		442				442
Exercise of stock options, including shares tendered related to stock options exercised (in shares)	25,201
Sale of common stock	$ 44	261,433				261,477
Sale of common stock (in shares)	4,370,277
Special dividend	$ 1	7,845	(11,250)			(3,404)
Special dividend (in shares)	125,212
Reclassification of warrants		12,192				12,192
Stock-based compensation expense		1,110				1,110
Common stock dividends			(3,946)			(3,946)
Total other comprehensive income (loss)				4,945		4,945
Net income (loss)			14,144			14,144
Balance at end of period at Dec. 31, 2021	$ 102	$ 399,754	$ (10,869)	$ (2,910)		$ 386,077
Balance (in shares) at Dec. 31, 2021	10,183,730