Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands		Common Stock Outstanding [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock, Common [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
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)
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
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
Common stock repurchased*	[1]				(2,332)
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)
Net income							2,856	2,856
Stock compensation expense				150				150
Foreign currency translation adjustment						243		243
Stock compensation expense (in shares)		6,504
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 Dec. 31, 2022		8,502,735
Balance at Dec. 31, 2022			90	16,471	(16,662)	(61)	52,925	52,763
Net income							1,256	1,256
Foreign currency translation adjustment						(53)		(53)
Unrealized gain (loss) on marketable securities						37		37
Balance (in shares) at Mar. 31, 2023		8,502,735
Balance at Mar. 31, 2023			90	16,471	(16,662)	(77)	54,181	54,003
Balance (in shares) at Dec. 31, 2022		8,502,735
Balance at Dec. 31, 2022			90	16,471	(16,662)	(61)	52,925	52,763
Net income								3,131
Unrealized gain (loss) on marketable securities								25
Balance (in shares) at Jun. 30, 2023		8,490,681
Balance at Jun. 30, 2023			90	16,621	(17,105)	(83)	56,056	55,579
Balance (in shares) at Mar. 31, 2023		8,502,735
Balance at Mar. 31, 2023			90	16,471	(16,662)	(77)	54,181	54,003
Common stock repurchased* (in shares)	[1]	(18,075)
Common stock repurchased*	[1]				(443)			(443)
Net income							1,875	1,875
Stock compensation expense				150				150
Foreign currency translation adjustment						6		6
Stock compensation expense (in shares)		6,021
Unrealized gain (loss) on marketable securities						(12)		(12)
Balance (in shares) at Jun. 30, 2023		8,490,681
Balance at Jun. 30, 2023			$ 90	$ 16,621	$ (17,105)	$ (83)	$ 56,056	$ 55,579

[1] At June 30, 2023, approximately $17.9 million was authorized for future repurchases of our common stock.