Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Captal	Accumulated Other Comprehensive Loss	Accumulated Deficit
Balance at Dec. 31, 2020	$ 19,370	$ 54	$ 24,968	$ (150)	$ (5,502)
Balance (in shares) at Dec. 31, 2020		5,352,626
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	164		164
Stock-based compensation (in shares)		24,594
Stock options exercised	8		8
Stock options exercised (in shares)		2,000
Stock for tax withholding	(35)		(35)
Stock for tax withholding (in shares)		(7,002)
Dividends declared	(1,288)				(1,288)
Comprehensive income:
Unrealized loss on available for sale debt securities, net of tax	0
Foreign currency translation adjustment	(100)			(100)
Net income	2,496				2,496
Balance at Sep. 30, 2021	20,615	$ 54	25,105	(250)	(4,294)
Balance (in shares) at Sep. 30, 2021		5,372,218
Balance at Jun. 30, 2021	20,654	$ 54	25,048	(185)	(4,263)
Balance (in shares) at Jun. 30, 2021		5,367,186
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	57		57
Stock-based compensation (in shares)		5,032
Dividends declared	(644)				(644)
Comprehensive income:
Unrealized loss on available for sale debt securities, net of tax	0
Foreign currency translation adjustment	(65)			(65)
Net income	613				613
Balance at Sep. 30, 2021	20,615	$ 54	25,105	(250)	(4,294)
Balance (in shares) at Sep. 30, 2021		5,372,218
Balance at Dec. 31, 2021	19,794	$ 54	25,167	(288)	(5,139)
Balance (in shares) at Dec. 31, 2021		5,378,857
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	329		329
Stock-based compensation (in shares)		24,120
Stock options exercised	$ 32		32
Stock options exercised (in shares)	7,000	7,000
Stock for tax withholding	$ (15)		(15)
Stock for tax withholding (in shares)		(2,270)
Dividends declared	(1,941)				(1,941)
Transfers of investments from held-to-maturity to available-for-sale classification	(62)			(62)
Comprehensive income:
Unrealized loss on available for sale debt securities, net of tax	(17)			(17)
Foreign currency translation adjustment	(197)			(197)
Net income	736				736
Balance at Sep. 30, 2022	18,659	$ 54	25,513	(564)	(6,344)
Balance (in shares) at Sep. 30, 2022		5,407,707
Balance at Jun. 30, 2022	18,625	$ 54	25,452	(543)	(6,338)
Balance (in shares) at Jun. 30, 2022		5,398,887
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	61		61
Stock-based compensation (in shares)		8,820
Dividends declared	(650)				(650)
Comprehensive income:
Unrealized loss on available for sale debt securities, net of tax	(17)			(17)
Foreign currency translation adjustment	(4)			(4)
Net income	644				644
Balance at Sep. 30, 2022	$ 18,659	$ 54	$ 25,513	$ (564)	$ (6,344)
Balance (in shares) at Sep. 30, 2022		5,407,707