CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($)	Common Class A Common Stock	Additional paid-in capital	Retained earnings	Treasury stock	Accumulated other comprehensive loss	Total
Balance at Dec. 31, 2019	$ 4,416,000	$ 14,056,000	$ 38,867,000	$ (10,213,000)	$ (620,000)	$ 46,506,000
Balance (in shares) at Dec. 31, 2019	4,416,000			(1,273,000)
Net Income	$ 0	0	(4,954,000)	$ 0	0	(4,954,000)
Exercise of stock options	$ 6,000	12,000	0	0	0	18,000
Exercise of stock options (in shares)	6,000
Restricted common stock compensation	$ 6,000	35,000	0	0	0	41,000
Restricted common stock compensation (in shares)	6,000
Stock-based compensation	$ 0	41,000	0	0	0	41,000
Dividends	0	0	(157,000)	0	0	(157,000)
Foreign currency translation adjustment	0	0	0	0	43,000	43,000
Balance at Dec. 31, 2020	$ 4,428,000	14,144,000	33,756,000	$ (10,213,000)	(577,000)	41,538,000
Balance (in shares) at Dec. 31, 2020	4,428,000			(1,273,000)
Net Income	$ 0	0	2,290,000	$ 0	0	2,290,000
Restricted common stock compensation	$ 25,000	18,000	0	0	0	43,000
Restricted common stock compensation (in shares)	25,000
Stock-based compensation	$ 0	5,000	0	0	0	5,000
Foreign currency translation adjustment	0	0	0	0	(36,000)	(36,000)
Balance at Dec. 31, 2021	$ 4,453,000	$ 14,167,000	$ 36,046,000	$ (10,213,000)	$ (613,000)	$ 43,840,000
Balance (in shares) at Dec. 31, 2021	4,453,000			(1,273,000)