Condensed Consolidated Statement of Shareholders' Equity (Unaudited) - USD ($)	Common Stock [Member] Common Class A [Member]	Common Stock [Member] Common Class B [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Parent [Member]	Noncontrolling Interest [Member]	Total
Balance (in shares) at Dec. 31, 2021	3,287,647	611,784
Balance at Dec. 31, 2021	$ 33,000	$ 6,000	$ 59,201,000	$ (20,171,000)	$ 39,069,000	$ (92,000)	$ 38,977,000
Stock options - compensation costs			1,000	0	1,000	0	1,000
Net loss			0	(1,262,000)	(1,262,000)	(138,000)	(1,400,000)
Investment in subsidiary from accredited investor			0	0	0	142,000	142,000
Balance (in shares) at Mar. 31, 2022	3,287,647	611,784
Balance at Mar. 31, 2022	$ 33,000	$ 6,000	59,202,000	(21,433,000)	37,808,000	(88,000)	37,720,000
Balance (in shares) at Dec. 31, 2022	3,287,647	611,784
Balance at Dec. 31, 2022	$ 33,000	$ 6,000	59,205,000	(20,754,000)	38,490,000	(347,000)	38,143,000
Stock options - compensation costs	0	0	1,000	0	1,000	0	1,000
Net loss	$ 0	$ 0	0	(1,677,000)	(1,677,000)	(122,000)	(1,799,000)
Balance (in shares) at Mar. 31, 2023	3,287,647	611,784
Balance at Mar. 31, 2023	$ 33,000	$ 6,000	$ 59,206	$ (22,431)	$ 36,814,000	$ (469,000)	$ 36,345,000