Consolidated Statement of Stockholders' Equity - USD ($) $ in Thousands	Common Stock Outstanding [Member]	Common Stock [Member]	Treasury Stock, Common [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Foreign Currency Adjustment Attributable to Noncontrolling Interest [Member]	Total
Balance (in shares) at Dec. 31, 2021	4,552,000
Balance at Dec. 31, 2021		$ 46	$ (2,087)	$ 32,529	$ (13,142)	$ 0	$ 17,346
Exercise of stock options (in shares)	3,000						4,000
Exercise of stock options		0	0	29	0	0	$ 29
Stock-based compensation		0	0	363	0	0	363
Net income		0	0	0	4,429	0	4,429
Repurchase of common stock (in shares)	(48)
Repurchase of common stock		(1)
Repurchase of common stock			(771)	0	0	0	(772)
Retirement of treasury shares		0	2,858	(2,865)	0	0	(7)
Balance (in shares) at Dec. 31, 2022	4,507,000
Balance at Dec. 31, 2022		45	0	30,056	(8,713)	0	$ 21,388
Shares surrendered by former employee (in shares)	(61,000)
Exercise of stock options (in shares)	9,000						9,000
Exercise of stock options		0	0	6	0	0	$ 6
Exercise of warrants (in shares)	143,000
Exercise of warrants		1	0	164	0	0	165
Stock-based compensation				473			473
Comprehensive (loss) income		0	0	0	0	(292)	(292)
Net income		0	0	0	5,296	0	5,296
Balance (in shares) at Dec. 31, 2023	4,598,000
Balance at Dec. 31, 2023		$ 46	$ 0	$ 30,699	$ (3,417)	$ (292)	$ 27,036