UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
AUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) [Abstract]
Revenue	$ 11,063,010	$ 12,340,927
Cost of revenue	8,720,125	9,039,577
Gross profit	2,342,885	3,301,350
Operating expenses
Selling, general and administration	2,878,942	3,033,455
Acquisition related expenses	10,000	209,344
Depreciation and amortization	820,736	689,100
Operating expenses	3,709,678	3,931,899
Operating (loss)	(1,366,793)	(630,549)
Interest expense	(211,159)	(90,806)
Others, net	6,199	(4,149)
Total other income (expenses)	(204,960)	(94,955)
(Loss) before income taxes	(1,571,753)	(725,504)
Tax benefit / (provision)	0	0
(Loss) after income taxes	(1,571,753)	(725,504)
Net income attributable to non-controlling interest	0	3,516
Net (loss) attributable to the Company	(1,571,753)	(721,988)
Dividend on preferred stock	(557,417)	(499,965)
Net (loss) attributable to common stock holders	(2,129,170)	(1,221,953)
Other comprehensive income/ (loss), net of tax:
Foreign exchange translation	29,791	5,335
Comprehensive (loss)	(2,099,379)	(1,216,618)
Comprehensive income/(loss) attributable to the Company	(2,099,379)	(1,220,134)
Comprehensive income/(loss) attributable to the non-controlling interest	0	3,516
Comprehensive income (loss)	$ (2,099,379)	$ (1,216,618)
Basic (loss) per share (in dollars per share)	$ (0.11)	$ (0.09)
Diluted (loss) per share (in dollars per share)	$ (0.11)	$ (0.09)
Basic weighted average number of common shares outstanding (in shares)	18,654,197	14,094,536
Diluted weighted average number of common shares outstanding (in shares)	18,654,197	14,094,536