Condensed Consolidated Statement of Shareholders' Equity (Unaudited) - 9 months ended Sep. 30, 2018 - USD ($) shares in Thousands, $ 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	612
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	612
Balance at Sep. 30, 2018	$ 32	$ 6	$ 58,970	$ (19,884)	$ 39,124	$ 1,786	$ 40,910