Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 31, 2018	8,817,988
Balance at Dec. 31, 2018	$ 88	$ 15,050	$ (92)	$ 10,875	$ 25,921
Stock options exercised (in shares)	33,000
Stock options exercised	$ 1	58			59
Net income				2,072	2,072
Stock compensation expense		25			25
Foreign currency translation adjustment			(1)		(1)
Balance (in shares) at Mar. 31, 2019	8,850,988
Balance at Mar. 31, 2019	$ 89	15,133	(93)	12,947	28,076
Balance (in shares) at Dec. 31, 2018	8,817,988
Balance at Dec. 31, 2018	$ 88	15,050	(92)	10,875	25,921
Net income					4,180
Balance (in shares) at Jun. 30, 2019	8,850,988
Balance at Jun. 30, 2019	$ 89	15,188	(128)	15,055	30,204
Balance (in shares) at Mar. 31, 2019	8,850,988
Balance at Mar. 31, 2019	$ 89	15,133	(93)	12,947	28,076
Net income				2,108	2,108
Stock compensation expense		55			55
Foreign currency translation adjustment			(35)		(35)
Balance (in shares) at Jun. 30, 2019	8,850,988
Balance at Jun. 30, 2019	$ 89	15,188	(128)	15,055	30,204
Balance (in shares) at Dec. 31, 2019	8,924,988
Balance at Dec. 31, 2019	$ 89	15,450	(94)	21,844	37,289
Net income				1,047	1,047
Stock compensation expense		62			62
Foreign currency translation adjustment			(31)		(31)
Balance (in shares) at Mar. 31, 2020	8,924,988
Balance at Mar. 31, 2020	$ 89	15,512	(125)	22,891	38,367
Balance (in shares) at Dec. 31, 2019	8,924,988
Balance at Dec. 31, 2019	$ 89	15,450	(94)	21,844	37,289
Net income					3,247
Balance (in shares) at Jun. 30, 2020	8,924,988
Balance at Jun. 30, 2020	$ 89	15,573	(140)	25,091	40,613
Balance (in shares) at Mar. 31, 2020	8,924,988
Balance at Mar. 31, 2020	$ 89	15,512	(125)	22,891	38,367
Net income				2,200	2,200
Stock compensation expense		61			61
Foreign currency translation adjustment			(15)		(15)
Balance (in shares) at Jun. 30, 2020	8,924,988
Balance at Jun. 30, 2020	$ 89	$ 15,573	$ (140)	$ 25,091	$ 40,613