Consolidated Statements of Changes in Equity - USD ($) $ in Thousands	Private Placement [Member] Common Stock [Member]	Private Placement [Member] Additional Paid-in Capital [Member]	Private Placement [Member] Statutory Reserves [Member]	Private Placement [Member] Retained Earnings [Member]	Private Placement [Member] AOCI Attributable to Parent [Member]	Private Placement [Member] Noncontrolling Interest [Member]	Private Placement [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Statutory Reserves [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Noncontrolling Interest [Member]	Total
Balance (in shares) at Dec. 31, 2016								12,158,542
Balance at Dec. 31, 2016								$ 12	$ 29,285	$ 2,607	$ (10,362)	$ 700	$ 54	$ 22,296
Share-based compensation related to awards provided to employees and directors in 2017 (in shares)								1,650,000
Share-based compensation related to awards provided to employees and directors in 2017								$ 2	1,703					1,705
Share-based payment in exchange for services from nonemployees (in shares)								174,000
Share-based payment in exchange for services from nonemployees									234					234
Share-based compensation related to awards provided to employees and directors in 2015									332					332
Net loss											(10,125)		114	(10,011)
Foreign currency translation (loss)/gain												898	9	907
Balance (in shares) at Dec. 31, 2017								13,982,542
Balance at Dec. 31, 2017								$ 14	31,554	2,607	(20,487)	1,598	177	15,463
Share-based compensation related to awards provided to employees and directors in 2017 (in shares)
Share-based payment in exchange for services from nonemployees (in shares)								250,000
Share-based payment in exchange for services from nonemployees									421					421
Share-based compensation related to awards provided to employees and directors in 2015									152					152
Net loss											(14,025)		(102)	(14,127)
Foreign currency translation (loss)/gain												(141)	6	(135)
Issuance of common stock for private placement, net of $1.89 million proceeds allocated to investor warrants labilities and $1.20 million direct offering costs (including $0.39 million proceeds allocated to placement agent warrants liabilities), respectively (in shares)	2,150,001
Issuance of common stock for private placement, net of $1.89 million proceeds allocated to investor warrants labilities and $1.20 million direct offering costs (including $0.39 million proceeds allocated to placement agent warrants liabilities), respectively	$ 2	$ 7,986					$ 7,988
Purchase noncontrolling interests in a Variable Interest Entity									(1,838)				(130)	(1,968)
Balance (in shares) at Dec. 31, 2018								16,382,543
Balance at Dec. 31, 2018								$ 16	$ 38,275	$ 2,607	$ (34,512)	$ 1,457	$ (49)	$ 7,794