CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($)	Class A Common Stock Class A Common Stock, $1 Par	Additional paid-in capital	Retained earnings	Treasury stock	Accumulated other comprehensive loss	Total
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
Treasury stock (in shares) at Dec. 31, 2021				(1,273,000)
Increase (Decrease) in Stockholders' Equity
Net income (loss)	$ 0	0	(618,000)	$ 0	0	(618,000)
Restricted common stock-based compensation	$ 0	8,000	0	0	0	8,000
Restricted common stock-based compensation (in shares)	0
Stock - based compensation	$ 0	1,000	0	0	0	1,000
Foreign currency translation adjustment	0	0	0	$ 0	(50,000)	(50,000)
Treasury stock (in shares) at Mar. 31, 2022				(1,273,000)
Balance at Mar. 31, 2022	$ 4,453,000	14,176,000	35,428,000	$ (10,213,000)	(663,000)	43,181,000
Balance (in shares) at Mar. 31, 2022	4,453,000
Balance at Dec. 31, 2022	$ 4,467,000	14,246,000	34,251,000	$ (10,213,000)	(795,000)	41,956,000
Balance (in shares) at Dec. 31, 2022	4,467,000
Treasury stock (in shares) at Dec. 31, 2022				(1,273,000)
Increase (Decrease) in Stockholders' Equity
Net income (loss)	$ 0	0	337,000	$ 0	0	337,000
Restricted common stock-based compensation	$ 0	9,000	0	0	0	9,000
Restricted common stock-based compensation (in shares)	0
Stock - based compensation	$ 0	8,000	0	0	0	8,000
Dividends	0	0	(160,000)	0	0	(160,000)
Foreign currency translation adjustment	0	0	0	$ 0	34,000	34,000
Treasury stock (in shares) at Mar. 31, 2023				(1,273,000)
Balance at Mar. 31, 2023	$ 4,467,000	$ 14,263,000	$ 34,428,000	$ (10,213,000)	$ (761,000)	$ 42,184,000
Balance (in shares) at Mar. 31, 2023	4,467,000