Condensed Consolidated Statement of Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Noncontrolling Interest [Member]	Total
Balance (in shares) at Dec. 31, 2017	20,681	104
Balance at Dec. 31, 2017	$ 207	$ (115)	$ 16,271	$ (1,690)	$ 4,977	$ 5,905	$ 25,555
Share-based compensation			49				49
Other comprehensive income						(30)	(30)
Net income					124	301	425
Exercise of stock options (in shares)		(71)
Exercise of stock options		$ 79	(79)
Distributions to non-controlling investors						(463)	(463)
Non-controlling interest related to Resource Plus acquisition						3,023	3,023
Balance (in shares) at Mar. 31, 2018	20,681	33
Balance at Mar. 31, 2018	$ 207	$ (36)	16,241	(1,690)	5,101	8,736	28,559
Balance (in shares) at Dec. 31, 2018	20,785	8
Balance at Dec. 31, 2018	$ 208	$ (8)	16,304	(3,638)	3,432	8,476	24,774
Share-based compensation			49				49
Other comprehensive income				98	(18)	28	108
Net income					619	422	1,041
Balance (in shares) at Mar. 31, 2019	20,785	8
Balance at Mar. 31, 2019	$ 208	$ (8)	$ 16,353	$ (3,540)	$ 4,033	$ 8,926	$ 25,972