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, 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
Unrealized gain (loss) on marketable securities						37		37
Foreign currency translation adjustment						(53)		(53)
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax						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
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax								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
Net income							1,875	1,875
Unrealized gain (loss) on marketable securities						(12)		(12)
Foreign currency translation adjustment						6		6
Common stock repurchased* (in shares)	[1]	(18,075)
Common stock repurchased*	[1]				(443)			(443)
Stock compensation expense (in shares)		6,021
Stock compensation expense				150				150
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax						(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
Balance (in shares) at Dec. 31, 2023		8,295,408
Balance at Dec. 31, 2023			90	16,621	(20,359)	32	56,320	52,704
Net income							430	430
Unrealized gain (loss) on marketable securities						5		5
Foreign currency translation adjustment						(2)		(2)
Common stock repurchased* (in shares)	[1]	(134,650)
Common stock repurchased*	[1]				(1,647)			(1,647)
Stock compensation expense				160				160
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax						5		5
Balance (in shares) at Mar. 31, 2024		8,160,758
Balance at Mar. 31, 2024			90	16,781	(22,006)	35	56,750	51,650
Balance (in shares) at Dec. 31, 2023		8,295,408
Balance at Dec. 31, 2023			90	16,621	(20,359)	32	56,320	52,704
Net income								1,326
Unrealized gain (loss) on marketable securities								22
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax								22
Balance (in shares) at Jun. 30, 2024		8,024,518
Balance at Jun. 30, 2024			91	17,205	(24,097)	4	57,646	50,849
Balance (in shares) at Mar. 31, 2024		8,160,758
Balance at Mar. 31, 2024			90	16,781	(22,006)	35	56,750	51,650
Net income							896	896
Unrealized gain (loss) on marketable securities						17		17
Foreign currency translation adjustment						(48)		(48)
Common stock repurchased* (in shares)	[1]	(147,040)
Common stock repurchased*	[1]				(2,091)			(2,091)
Stock compensation expense (in shares)		10,800
OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment and Tax						17		17
Stock compensation expense			1	424				425
Balance (in shares) at Jun. 30, 2024		8,024,518
Balance at Jun. 30, 2024			$ 91	$ 17,205	$ (24,097)	$ 4	$ 57,646	$ 50,849

[1] At June 30, 2024, approximately $11.0 million was authorized for future repurchases of our common stock.