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Share-Based Payments (Tables)

12 Months Ended

Dec. 31, 2018

Compensation and Retirement Disclosure [Abstract]

Schedule of stock option activity

										Weighted
						Weighted				Average
						Average				Remaining				Aggregated
		Options				Exercise				Contractual				Intrinsic
		Outstanding				Price				Life (Years)				Value
Outstanding at January 1, 2018			1,853,391			$	3.2				2.99			$	0.02
Granted			-				-
Exercised			(136,961	)			2.34
Expired			(9,999	)			1.58
Forfeited			-				-
Outstanding at December 31, 2018			1,706,431			$	3.28				4.08			$	-
Vested and expected to be vested as of December 31, 2018			1,706,431			$	3.28				4.08			$	-
Options exercisable at December 31, 2018 (vested)			1,653,097			$	3.33				3.94			$	-

Schedule of assumptions used to estimate the fair values of the share options

		December 31,
		2017
Expected term			5.4 ~5.9 years
Expected volatility			55% ~ 85	%
Expected dividend yield			0	%
Risk free interest rate			2.04% ~2.29	%

Schedule of warrants outstanding and exercisable

		2018				2017
		Number of				Number of
		Warrants				Warrants
		Outstanding and				Outstanding and				Exercise				Expiration
Warrants Outstanding		Exercisable				Exercisable				Price				Date

2014 Broker Warrants (Series E Financing)			60,000				703,714			$	1.75			01/31/19
2016 Warrants to SSS			-				1,818,182			$	2.75			03/28/18
			60,000				2,521,896

Schedule of summary of restricted shares

						Weighted-average
		Shares				fair value
Non-vested restricted shares outstanding at January 1, 2018			109,586			$	1.92
Granted			1,342,743				2.58
Forfeited			(100,000	)			2.27
Vested			(1,264,743	)			2.56
Non-vested restricted shares outstanding at December 31, 2018			87,586			$	2.46

Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable.

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