Consolidated Statements of Equity - USD ($) $ in Thousands	Total	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
Beginning Balance at Dec. 31, 2013	$ 57,116	$ 15	$ 3,572	$ 53,618	$ 10,213	$ 8,784	$ (19,085)	$ 57,116
Beginning Balance, Shares at Dec. 31, 2013		14,781,241
Stock issued for compensation	15	$ 3	15					15
Stock issued for compensation, Shares		2,853
Net income (loss)	$ 16,366			16,366				$ 16,366
Transfer to reserve				(2,324)	2,324
Net cash received from related party to repay amounts under counter guarantee agreement	$ (339)						(339)	$ (339)
Foreign currency translation gain (loss)	(506)					(506)		(506)
Ending Balance at Dec. 31, 2014	72,652	$ 15	3,587	67,660	12,537	8,277	(19,424)	72,652
Ending Balance, Shares at Dec. 31, 2014		14,784,094
Stock issued for compensation	10	$ 2	10					10
Stock issued for compensation, Shares		1,774
Net income (loss)	$ 13,569			13,569				$ 13,569	$ (264)
Transfer to reserve				(2,790)	2,790
Net cash paid to related party under counter guarantee agreement (Note 13)	$ (2,352)						(2,352)	$ (2,352)
Acquisition of Shanghai Yiduo	204								204
Foreign currency translation gain (loss)	(5,029)					(5,028)		(5,028)	(1)
Ending Balance at Dec. 31, 2015	$ 78,851	$ 15	$ 3,597	$ 78,439	$ 15,327	$ 3,249	$ (21,776)	$ 78,851	$ (61)
Ending Balance, Shares at Dec. 31, 2015		14,785,868