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
Stock-based compensation	113		113
Stock-based compensation (in shares)		16,900
Stock for tax withholding	(6)		(6)
Stock for tax withholding (in shares)		(1,678)
Other comprehensive income:
Foreign currency translation adjustment	(52)			(52)
Net income	39				39
Balance at Jun. 30, 2020	18,027	$ 53	24,858	(358)	(6,526)
Balance (in shares) at Jun. 30, 2020		5,338,071
Balance at Mar. 31, 2020	17,775	$ 53	24,810	(412)	(6,676)
Balance (in shares) at Mar. 31, 2020		5,331,799
Stock-based compensation	54		54
Stock-based compensation (in shares)		7,950
Stock for tax withholding	(6)		(6)
Stock for tax withholding (in shares)		(1,678)
Other comprehensive income:
Foreign currency translation adjustment	54			54
Net income	150				150
Balance at Jun. 30, 2020	18,027	$ 53	24,858	(358)	(6,526)
Balance (in shares) at Jun. 30, 2020		5,338,071
Balance at Dec. 31, 2020	19,370	$ 54	24,968	(150)	(5,502)
Balance (in shares) at Dec. 31, 2020		5,352,626
Stock-based compensation	107		107
Stock-based compensation (in shares)		19,562
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	(644)				(644)
Other comprehensive income:
Foreign currency translation adjustment	(35)			(35)
Net income	1,883				1,883
Balance at Jun. 30, 2021	20,654	$ 54	25,048	(185)	(4,263)
Balance (in shares) at Jun. 30, 2021		5,367,186
Balance at Mar. 31, 2021	20,477	$ 54	24,997	(203)	(4,371)
Balance (in shares) at Mar. 31, 2021		5,354,337
Stock-based compensation	54		54
Stock-based compensation (in shares)		12,527
Stock options exercised	$ 8		8
Stock options exercised (in shares)	2,000
Stock for tax withholding	$ (11)		(11)
Stock for tax withholding (in shares)		(1,678)
Dividends declared	(644)				(644)
Other comprehensive income:
Foreign currency translation adjustment	18			18
Net income	752
Balance at Jun. 30, 2021	$ 20,654	$ 54	$ 25,048	$ (185)	$ (4,263)
Balance (in shares) at Jun. 30, 2021		5,367,186