Condensed Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Captal	Accumulated Other Comprehensive Loss	Accumulated Deficit
Balance at Dec. 31, 2019	$ 17,933	$ 53	$ 24,751	$ (306)	$ (6,565)
Balance (in shares) at Dec. 31, 2019		5,322,849
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	168		168
Stock-based compensation (in shares)		25,120
Stock for tax withholding	(6)		(6)
Stock for tax withholding (in shares)		(1,678)
Other comprehensive income:
Foreign currency translation adjustment	42			42
Net income	698				698
Balance at Sep. 30, 2020	18,835	$ 53	24,913	(264)	(5,867)
Balance (in shares) at Sep. 30, 2020		5,346,291
Balance at Jun. 30, 2020	18,027	$ 53	24,858	(358)	(6,526)
Balance (in shares) at Jun. 30, 2020		5,338,071
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	55		55
Stock-based compensation (in shares)		8,220
Other comprehensive income:
Foreign currency translation adjustment	94			94
Net income	659				659
Balance at Sep. 30, 2020	18,835	$ 53	24,913	(264)	(5,867)
Balance (in shares) at Sep. 30, 2020		5,346,291
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	2,000
Stock for tax withholding	$ (35)		(35)
Stock for tax withholding (in shares)		(7,002)
Dividends declared	(1,288)				(1,288)
Other comprehensive income:
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
Stock options exercised	0
Stock for tax withholding	0
Dividends declared	(644)				(644)
Other comprehensive income:
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