Share Based Compensation (Tables)

12 Months Ended

Dec. 31, 2018

Share-based Payment Arrangement [Abstract]

Schedule of the Group's option activities under the 2007 Plan

	Number of options			Weighted average exercise price		Weighted average remaining contractual term		Aggregate intrinsic value
				($)		(Years)		($)
Outstanding, January 1, 2016		32,037,240			0.30		4.97		308
Granted		610,000			0.56
Forfeited		(5,190,297	)		0.34
Outstanding, December 31, 2016		27,456,943			0.30		5.26		308
Vested and expected to vest at December 31, 2016		27,456,943			0.30		5.26		308
Outstanding, January 1, 2017		27,456,943			0.30		5.26		308
Granted		9,085,000			0.70
Forfeited		(8,007,606	)		0.04
Outstanding, August 18, 2017		28,534,337			0.48		6.99		-
Vested and expected to vest at August 18, 2017		28,534,337			0.48		6.99		-

Schedule of share based compensation on the original grant-date fair value of the award

	Number of options			Weighted average exercise price		Weighted average remaining contractual term		Aggregate intrinsic value
				($)		(Years)		($)
Converted under Assumed Options:
Outstanding, August 18, 2017		2,695,194			5.08		6.99		6,561
Granted		180,000			5.30
Forfeited		(49,804	)		6.58
Outstanding, December 31, 2017		2,825,390			5.38		6.43		6,860
Vested and expected to vest at December 31, 2017		2,825,390			5.38		6.43		6,860
Outstanding, January 1, 2018		2,825,390			5.38		6.43		6,860
Granted		-			-
Forfeited		(316,585	)		3.09
Outstanding, December 31, 2018		2,508,805			5.29		6.01		312
Vested and expected to vest at December 31, 2018		2,508,805			5.29		6.01		312

Schedule of estimated fair value of options

	Year 2016			Year 2017			Year 2018
Risk-free interest rates		1.58%-2.60	%		1.06%-2.32	%		*
Expected life (years)		10 years			10 years			*
Expected volatility		45%-46	%		31.9%-43.9	%		*
Expected dividend yield		0	%		0	%		*
Exercise multiple		2.20			2.20			*
Post-vesting forfeit rate		10	%		10	%		*
Fair value of underlying ordinary shares	$	0.615-$0.697		$	7.45			*
Fair value of share option	$	0.309-$0.315		$	2.34-$7.45			*

Schedule of compensation expense relating to share options granted to employees

	For the years ended December 31,
	2017		2018
Cost of revenues		-		-
Sales and marketing expenses		1,470		359
General and administrative expenses		1,277		254
Research and development expenses		3,143		363
		5,890		976