Condensed Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Captal	Accumulated Other Comprehensive Loss	Accumulated Deficit
Balance at Jun. 30, 2018	$ 9,231	$ 52	$ 24,467	$ (327)	$ (14,961)
Balance (in shares) at Jun. 30, 2018		5,269,809
Stock-based compensation	123	$ 1	122
Stock-based compensation (in shares)		61,609
Stock for tax withholding	0
Stock for tax withholding (in shares)		(2,248)
Comprehensive income (loss):
Foreign currency translation adjustment	(17)			(17)
Net income	494				494
Balance at Dec. 31, 2017	8,641	$ 51	24,355	(310)	(15,455)
Balance (in shares) at Dec. 31, 2017		5,210,448
Balance at Jun. 30, 2018	9,231	$ 52	24,467	(327)	(14,961)
Balance (in shares) at Jun. 30, 2018		5,269,809
Stock-based compensation	38		38
Stock-based compensation (in shares)		13,583
Comprehensive income (loss):
Foreign currency translation adjustment	(16)			(16)
Net income	511				511
Balance at Mar. 31, 2018	8,698	$ 52	24,429	(311)	(15,472)
Balance (in shares) at Mar. 31, 2018		5,256,226
Balance at Jun. 30, 2019	11,702	$ 52	24,637	(382)	(12,605)
Balance (in shares) at Jun. 30, 2019		5,309,259
Stock-based compensation	104		104
Stock-based compensation (in shares)		33,814
Stock options exercised	$ 4		4
Stock options exercised (in shares)	1,000	1,000
Stock for tax withholding	$ (21)		(21)
Stock for tax withholding (in shares)		(4,040)
Comprehensive income (loss):
Foreign currency translation adjustment	(10)			(10)
Net income	955				955
Cumulative effect from adoption of ASU No. 2016-02	33				33
Balance at Dec. 31, 2018	10,637	$ 52	24,550	(372)	(13,593)
Balance (in shares) at Dec. 31, 2018		5,278,485
Balance at Jun. 30, 2019	11,702	$ 52	24,637	(382)	(12,605)
Balance (in shares) at Jun. 30, 2019		5,309,259
Stock-based compensation	54		54
Stock-based compensation (in shares)		16,996
Stock for tax withholding	(9)		(9)
Stock for tax withholding (in shares)		(1,678)
Comprehensive income (loss):
Foreign currency translation adjustment	(40)			(40)
Net income	647				647
Balance at Mar. 31, 2019	$ 11,050	$ 52	$ 24,592	$ (342)	$ (13,252)
Balance (in shares) at Mar. 31, 2019		5,293,941