Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	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, 2020	3,287,647	611,784
Balance at Dec. 31, 2020	$ 33	$ 6	$ 59,196	$ (22,142)	$ 37,093	$ (126)	$ 36,967
Stock options - compensation costs			4	0	4	0	4
Net income (loss)			0	2,441	2,441	(214)	2,227
Investment in subsidiary from accredited investor			0	0	0	358	358
Balance (in shares) at Sep. 30, 2021	3,287,647	611,784
Balance at Sep. 30, 2021	$ 33	$ 6	59,200	(19,701)	39,538	18	39,556
Balance (in shares) at Jun. 30, 2021	3,287,647	611,784
Balance at Jun. 30, 2021	$ 33	$ 6	59,199	(20,684)	38,554	(172)	38,382
Stock options - compensation costs			1	0	1	0	1
Net income (loss)			0	983	983	(168)	815
Investment in subsidiary from accredited investor			0	0	0	358	358
Balance (in shares) at Sep. 30, 2021	3,287,647	611,784
Balance at Sep. 30, 2021	$ 33	$ 6	59,200	(19,701)	39,538	18	39,556
Balance (in shares) at Dec. 31, 2021	3,287,647	611,784
Balance at Dec. 31, 2021	$ 33	$ 6	59,201	(20,171)	39,069	(92)	38,977
Stock options - compensation costs	0	0	3	0	3	0	3
Net income (loss)	$ 0	$ 0	0	390	390	(314)	76
Investment in subsidiary from accredited investor			0	0	0	142	142
Balance (in shares) at Sep. 30, 2022	3,287,647	611,784
Balance at Sep. 30, 2022	$ 33	$ 6	59,204	(19,781)	39,462	(264)	39,198
Balance (in shares) at Jun. 30, 2022	3,287,647	611,784
Balance at Jun. 30, 2022	$ 33	$ 6	59,203	(20,949)	38,293	(168)	38,125
Stock options - compensation costs	0	0	1	0	1	0	1
Net income (loss)	$ 0	$ 0	0	1,168	1,168	(96)	1,072
Balance (in shares) at Sep. 30, 2022	3,287,647	611,784
Balance at Sep. 30, 2022	$ 33	$ 6	$ 59,204	$ (19,781)	$ 39,462	$ (264)	$ 39,198