Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock [Member]	Total
Beginning balance, value at Dec. 31, 2019	$ 14	$ 60,215	$ (1,506)	$ (2)	$ (47,490)	$ 11,231
Balance, shares at Dec. 31, 2019	11,573,593
Unrealized loss on marketable debt securities, net of taxes				(9)		(9)
Stock-based compensation		1,459				1,459
Stock based compensation, shares	30,660
Net income			(2,125)			(2,125)
Ending balance, value at Dec. 31, 2020	$ 14	61,674	(3,631)	(11)	(47,490)	10,556
Balance, shares at Dec. 31, 2020	11,604,253
Unrealized loss on marketable debt securities, net of taxes				(164)		(164)
Stock-based compensation		3,183				3,183
Stock based compensation, shares	8,800
Net income			6,273			6,273
Issuance of common stock and warrants for cash from public offering, net of $2,365 offering cost	$ 2	35,133				35,135
Issuance of common stock and warrants for cash from public offering, shares	3,000,000
Issuance of common stock and warrants for cash from private offering		5,500				5,500
Issuance of common stock and warrants for cash from private offering, shares	550,000
Issuance of common shares related to business acqusition		3,608				3,608
Issuance of common shares related to business acqusition, shares	483,685
Cash dividends		(4,546)				(4,546)
Repurchases of common shares					(917)	(917)
Repurchases of common share, shares	(166,824)
Cashless warrants exercise
Cashless warrants exercise shares	5,986
Ending balance, value at Dec. 31, 2021	$ 16	$ 104,552	$ 2,642	$ (175)	$ (48,407)	$ 58,628
Balance, shares at Dec. 31, 2021	15,485,900