SHARE BASED PAYMENTS (Tables)

12 Months Ended

Dec. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Stock Option Activities

	Outstanding Options
				Weighted average		Weighted average		Weighted average		Aggregate
	Number of			exercise price		grant-date		remaining		intrinsic
	options			per option		fair value		contractual terms		value
Outstanding as of January 1, 2015		14,853,764		$	1.15	$	1.18
Granted		660,000			1.68		1.16
Exercised		(4,453,232	)		1.20		1.42
Forfeited		(621,692	)		1.38		1.20
Outstanding as of December 31, 2015		10,438,840		$	1.14	$	1.07		2.16	$	17,236
Options vested and expected to vest as of December 31, 2015		10,332,009		$	1.14	$	1.07		2.15	$	17,056
Options exercisable as of December 31, 2015		9,237,208		$	1.14	$	1.13		1.99	$	15,262

Schedule of Stock Option Assumptions

	For the years ended December 31,
	2013		2014		2015
Risk-free interest rate of return	0.12%-1.10	%	0.10% - 1.07	%	0.00%-1.24	%
Expected term	0.33-4.42 years		1.00 - 3.32 years		0.04-2.93 Years
Volatility	64.75%-94.43	%	63.10% - 67.06	%	7.19%-126.63	%
Dividend yield	-		-		-