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Equity (Tables)

12 Months Ended

Dec. 31, 2016

Warrants [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Summary of option and warrant activities

		Number of Units				Weighted Average Exercise Price				Weighted Average Remaining Contractual Term (in years)				Aggregate Intrinsic Value
Outstanding, December 31, 2013			9,737,729			$	1.06				4.89			$	47,396,307
Granted			491,928				8.33
Exercised			(2,501,993	)			0.67
Forfeited			(29,167	)			6.70
Outstanding, December 31, 2014			7,698,497				1.64				3.97				34,317,224
Granted			3,333,333				6.50
Exercised			(2,013,360	)			0.41
Outstanding, December 31, 2015			9,018,470				3.73				2.93				10,199,230
Granted			130,000				0.96
Exercised			(183,718	)			0.90
Outstanding, December 31, 2016			8,964,752				3.72				1.95				1,445,786
Exercisable, December 31, 2016			8,612,252				3.66				1.79				1,445,786

Stock Options [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Summary of option and warrant activities

		Number of Units				Weighted Average Exercise Price				Weighted Average Remaining Contractual Term (in years)				Aggregate Intrinsic Value
Outstanding, December 31, 2013			1,985,384				3.23				8.34				5,908,696
Issued			1,338,100				8.86
Exercised			(310,400	)			0.95
Outstanding, December 31, 2014			3,013,084				5.98				8.35				4,728,842
Issued			1,554,499				2.78
Cancelled			(576,000	)			8.70
Exercised			(20,000	)			0.78
Outstanding, December 31, 2015			3,971,583				4.34				8.01				2,964,146
Issued			2,225,000				1.92
Cancelled			(266,485	)			2.51
Exercised			(23,212	)			0.78
Outstanding, December 31, 2016			5,906,886				3.52				7.90				51,704
Exercisable, December 31, 2016			2,601,947			$	4.67				6.31			$	51,704

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- Definition

Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

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+ References

No definition available.

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