Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands		Common Stock Outstanding [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 31, 2020		8,885,797
Balance at Dec. 31, 2020			$ 89	$ 15,836	$ (1,639)	$ (140)	$ 30,005	$ 44,151
Common stock repurchased* (in shares)	[1]	(70,947)
Common stock repurchased*	[1]				(2,712)			(2,712)
Stock options exercised (in shares)		67,500
Stock options exercised			1	106				107
Net income								1,040
Stock compensation expense				57				57
Foreign currency translation adjustment						4		4
Balance (in shares) at Mar. 31, 2021		8,882,350
Balance at Mar. 31, 2021			90	15,999	(4,351)	(136)	31,045	42,647
Balance (in shares) at Dec. 31, 2020		8,885,797
Balance at Dec. 31, 2020			89	15,836	(1,639)	(140)	30,005	44,151
Net income								3,845
Stock compensation expense	[1]							198
Balance (in shares) at Jun. 30, 2021		8,742,599
Balance at Jun. 30, 2021			90	16,197	(9,399)	(132)	33,850	40,606
Balance (in shares) at Mar. 31, 2021		8,882,350
Balance at Mar. 31, 2021			90	15,999	(4,351)	(136)	31,045	42,647
Common stock repurchased* (in shares)	[1]	(144,194)
Common stock repurchased*	[1]				(5,048)			(5,048)
Net income							2,805	2,805
Foreign currency translation adjustment						4		4
Stock compensation expense (in shares)	[1]	4,443
Stock compensation expense	[1]			198
Balance (in shares) at Jun. 30, 2021		8,742,599
Balance at Jun. 30, 2021			90	16,197	(9,399)	(132)	33,850	40,606
Balance (in shares) at Dec. 31, 2021		8,689,815
Balance at Dec. 31, 2021			90	16,261	(11,327)	(194)	39,044	43,874
Common stock repurchased* (in shares)	[1]	(70,864)
Common stock repurchased*	[1]				(2,332)			(2,332)
Net income						8,670		8,670
Stock compensation expense				10				10
Foreign currency translation adjustment						1		1
Balance (in shares) at Mar. 31, 2022		8,618,951
Balance at Mar. 31, 2022			90	16,271	(13,659)	(193)	47,714	50,223
Balance (in shares) at Dec. 31, 2021		8,689,815
Balance at Dec. 31, 2021			90	16,261	(11,327)	(194)	39,044	$ 43,874
Stock options exercised (in shares)								0
Net income								$ 11,526
Balance (in shares) at Jun. 30, 2022		8,567,008
Balance at Jun. 30, 2022			90	16,421	(15,006)	50	50,570	52,125
Balance (in shares) at Mar. 31, 2022		8,618,951
Balance at Mar. 31, 2022			90	16,271	(13,659)	(193)	47,714	50,223
Common stock repurchased* (in shares)	[1]	(58,447)
Common stock repurchased*	[1]				(1,347)			$ (1,347)
Stock options exercised (in shares)								0
Net income							2,856	$ 2,856
Foreign currency translation adjustment						243		243
Stock compensation expense (in shares)		6,504
Stock compensation expense				150				150
Balance (in shares) at Jun. 30, 2022		8,567,008
Balance at Jun. 30, 2022			$ 90	$ 16,421	$ (15,006)	$ 50	$ 50,570	$ 52,125

[1] At June 30, 2022, approximately $19,994,000 was authorized for future repurchases of our common stock.