Condensed Consolidated Statements of Equity (Unaudited) - USD ($) $ in Thousands	Common Stock	Additional paid-in capital	Retained Earnings Unrestricted	Retained Earnings Statutory reserve	Accumulated other Comprehensive income	Amounts due from related party	Total equity attributable to stockholders of the Company [Member]	Non-controlling Interest	Total
Balance at Dec. 31, 2017	$ 15	$ 3,620	$ 95,195	$ 17,794	$ 2,585	$ (15,449)	$ 103,760	$ (1,062)	$ 102,698
Balance, shares at Dec. 31, 2017	14,795,992
Net income (loss)			815				815	(228)	587
Net cash paid to related party under counter guarantee agreement						(8,480)	(8,480)		(8,480)
Foreign currency translation loss					4,023		4,023	(94)	3,929
Balance at Mar. 31, 2018	$ 15	3,620	96,010	17,794	6,608	(23,929)	100,118	(1,384)	98,734
Balance, shares at Mar. 31, 2018	14,795,992
Balance at Dec. 31, 2017	$ 15	3,620	95,195	17,794	2,585	(15,449)	103,760	(1,062)	102,698
Balance, shares at Dec. 31, 2017	14,795,992
Net income (loss)									3,306
Balance at Jun. 30, 2018	$ 15			17,794
Balance, shares at Jun. 30, 2018	14,795,992
Balance at Mar. 31, 2018	$ 15	3,620	96,010	17,794	6,608	(23,929)	100,118	(1,384)	98,734
Balance, shares at Mar. 31, 2018	14,795,992
Net income (loss)			2,776				2,776	(58)	2,719
Net cash received from related party under counter guarantee agreement						2,340	2,340		2,340
Foreign currency translation loss					(6,656)	(21,589)	(6,656)	123	(6,533)
Balance at Jun. 30, 2018	$ 15			17,794
Balance, shares at Jun. 30, 2018	14,795,992
Balance at Dec. 31, 2018	$ 15	3,627	105,914	19,083	(3,578)	(10,354)	114,707	(1,551)	113,156
Balance, shares at Dec. 31, 2018	14,798,198
Stock issued for compensation	$ 4	8					8		8
Stock issued for compensation, shares	1,942
Net income (loss)			(521)				(521)	66	(455)
Net cash received from related party under counter guarantee agreement						1,101	1,101		1,101
Foreign currency translation loss					3,972		3,972	34	4,006
Balance at Mar. 31, 2019	$ 15	3,635	105,393	19,083	394	(9,253)	119,267	(1,451)	117,816
Balance, shares at Mar. 31, 2019	14,800,140
Balance at Dec. 31, 2018	$ 15	3,627	105,914	19,083	(3,578)	(10,354)	114,707	(1,551)	113,156
Balance, shares at Dec. 31, 2018	14,798,198
Net income (loss)									1,318
Balance at Jun. 30, 2019	$ 15	3,635	107,249	19,083		(7,863)	120,026	(1,500)	118,526
Balance, shares at Jun. 30, 2019	14,800,140
Balance at Mar. 31, 2019	$ 15	3,635	105,393	19,083	394	(9,253)	119,267	(1,451)	117,816
Balance, shares at Mar. 31, 2019	14,800,140
Net income (loss)			1,856				1,856	(83)	1,773
Net cash received from related party under counter guarantee agreement						1,390	1,390		1,390
Foreign currency translation loss					$ (2,487)		(2,487)	34	(2,453)
Balance at Jun. 30, 2019	$ 15	$ 3,635	$ 107,249	$ 19,083		$ (7,863)	$ 120,026	$ (1,500)	$ 118,526
Balance, shares at Jun. 30, 2019	14,800,140