Consolidated Statements of Stockholders' Equity - USD ($)		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, 2019		8,924,988
Balance at Dec. 31, 2019			$ 89,000	$ 15,450,000		$ (94,000)	$ 21,844,000	$ 37,289,000
Common stock repurchased* (in shares)	[1]	(43,571)
Common stock repurchased*	[1]				$ (1,639,000)			(1,639,000)
Net income							8,161,000	8,161,000
Stock compensation expense		$ 4,380,000		386,000				386,000
Foreign currency translation adjustment						(46,000)		(46,000)
Balance (in shares) at Dec. 31, 2020		8,885,797
Balance at Dec. 31, 2020			89,000	15,836,000	(1,639,000)	(140,000)	30,005,000	44,151,000
Common stock repurchased* (in shares)	[1]	(267,925)
Common stock repurchased*	[1]				(9,688,000)			(9,688,000)
Net income							9,039,000	9,039,000
Stock compensation expense		$ 4,443		318,000				318,000
Foreign currency translation adjustment						(54,000)		$ (54,000)
Options exercised (in shares)		67,500						67,500
Stock options exercised			1,000	107,000				$ 108,000
Balance (in shares) at Dec. 31, 2021		8,689,815
Balance at Dec. 31, 2021			$ 90,000	$ 16,261,000	$ (11,327,000)	$ (194,000)	$ 39,044,000	$ 43,874,000

[1] At December 31, 2021, approximately $3,673,000 was authorized for future repurchases of our common stock.