CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balance on December 31, 2021 at Dec. 31, 2020		$ 382	$ 102,117	$ (99,767)	$ 2,732
Shares, Outstanding, Beginning Balance at Dec. 31, 2020		38,221,292
Stock-based compensation			42		42
Net income				1,310	1,310
Balance on March 31, 2022 at Mar. 31, 2021		$ 382	102,159	(98,457)	4,084
Shares, Outstanding, Ending Balance at Mar. 31, 2021		38,221,292
Balance on December 31, 2021 at Dec. 31, 2021		$ 489	104,423	(97,447)	7,465
Shares, Outstanding, Beginning Balance at Dec. 31, 2021		48,893,573
Stock-based compensation			148		148
Net income				62	62
Issuance of shares and stock option exercises		$ 1	72		73
Stock Issued During Period, Shares, New Issues		133,168
Balance on March 31, 2022 at Mar. 31, 2022		$ 490	$ 104,643	$ (97,385)	$ 7,748
Shares, Outstanding, Ending Balance at Mar. 31, 2022		49,026,741