Condensed Consolidated Statement 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, 2018	3,263,647	611,784
Balance at Dec. 31, 2018	$ 33	$ 6	$ 59,141	$ (21,701)	$ 37,479	$ 14	$ 37,493
Stock options - compensation costs			4		4		4
Net income (loss)				(15)	(15)	(67)	(82)
Balance (in shares) at Sep. 30, 2019	3,263,647	611,784
Balance at Sep. 30, 2019	$ 33	$ 6	59,145	(21,716)	37,468	(53)	37,415
Balance (in shares) at Jun. 30, 2019	3,263,647	611,784
Balance at Jun. 30, 2019	$ 33	$ 6	59,144	(21,860)	37,323	(35)	37,288
Stock options - compensation costs			1		1		1
Net income (loss)				144	144	(18)	126
Balance (in shares) at Sep. 30, 2019	3,263,647	611,784
Balance at Sep. 30, 2019	$ 33	$ 6	59,145	(21,716)	37,468	(53)	37,415
Balance (in shares) at Dec. 31, 2019	3,263,647	611,784
Balance at Dec. 31, 2019	$ 33	$ 6	59,147	(22,156)	37,030	(66)	36,964
Stock options - compensation costs			4		4		4
Net income (loss)				(467)	(467)	(37)	(504)
Balance (in shares) at Sep. 30, 2020	3,263,647	611,784
Balance at Sep. 30, 2020	$ 33	$ 6	59,151	(22,623)	36,567	(103)	36,464
Balance (in shares) at Jun. 30, 2020	3,263,647	611,784
Balance at Jun. 30, 2020	$ 33	$ 6	59,150	(23,404)	35,785	(95)	35,690
Stock options - compensation costs			1		1		1
Net income (loss)				781	781	(8)	773
Balance (in shares) at Sep. 30, 2020	3,263,647	611,784
Balance at Sep. 30, 2020	$ 33	$ 6	$ 59,151	$ (22,623)	$ 36,567	$ (103)	$ 36,464