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 (loss)						(30)	(30)
Net income (loss)					124	301	425
Exercise of stock options (in shares)		(71)
Exercise of stock options		$ 79	(79)
Distribution 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, 2017	20,681	104
Balance at Dec. 31, 2017	$ 207	$ (115)	16,271	(1,690)	4,977	5,905	25,555
Net income (loss)							(671)
Balance (in shares) at Jun. 30, 2018	20,681	30
Balance at Jun. 30, 2018	$ 207	$ (33)	16,253	(2,065)	3,325	8,764	26,451
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
Share-based compensation			15				15
Other comprehensive income (loss)				(375)		(275)	(650)
Net income (loss)					(1,763)	666	(1,097)
Re-issue treasury shares – RSU's (in shares)		(3)
Re-issue treasury shares – RSU's		$ 3	(3)
Non-controlling interest related to Resource Plus acquisition						(375)	(375)
Other changes					(13)	12	(1)
Balance (in shares) at Jun. 30, 2018	20,681	30
Balance at Jun. 30, 2018	$ 207	$ (33)	16,253	(2,065)	3,325	8,764	26,451
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 (loss)				98	(18)	28	108
Net income (loss)					616	421	1,037
Balance (in shares) at Mar. 31, 2019	20,785	8
Balance at Mar. 31, 2019	$ 208	$ (8)	16,353	(3,540)	4,030	8,925	25,968
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
Net income (loss)							3,844
Balance (in shares) at Jun. 30, 2019	20,850	2
Balance at Jun. 30, 2019	$ 209	$ (15)	16,410	(3,556)	5,553	10,284	28,885
Balance (in shares) at Mar. 31, 2019	20,785	8
Balance at Mar. 31, 2019	$ 208	$ (8)	16,353	(3,540)	4,030	8,925	25,968
Share-based compensation			51				51
Other comprehensive income (loss)				(16)		75	59
Net income (loss)					1,523	1,284	2,807
Exercise of stock options (in shares)	65	(6)
Exercise of stock options	$ 1	$ (7)	6
Balance (in shares) at Jun. 30, 2019	20,850	2
Balance at Jun. 30, 2019	$ 209	$ (15)	$ 16,410	$ (3,556)	$ 5,553	$ 10,284	$ 28,885