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, 2017	3,191,100	612,231
Balance at Dec. 31, 2017	$ 32	$ 6	$ 58,965	$ (20,557)	$ 38,446	$ 2,126	$ 40,572
Stock options - compensation costs			5		5		5
Net income (loss)				673	673	(340)	333
Balance (in shares) at Sep. 30, 2018	3,191,100	612,231
Balance at Sep. 30, 2018	$ 32	$ 6	58,970	(19,884)	39,124	1,786	40,910
Balance (in shares) at Jun. 30, 2018	3,191,100	612,231
Balance at Jun. 30, 2018	$ 32	$ 6	58,968	(20,733)	38,273	1,882	40,155
Stock options - compensation costs			2		2		2
Net income (loss)				849	849	(96)	753
Balance (in shares) at Sep. 30, 2018	3,191,100	612,231
Balance at Sep. 30, 2018	$ 32	$ 6	58,970	(19,884)	39,124	1,786	40,910
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