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Equity (Tables)

12 Months Ended

Dec. 31, 2018

Stock Options [Member]

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

Summary of option and warrant activities

		Number of Options				Weighted Average Exercise Price				Weighted Average Remaining Contractual Term (in years)				Aggregate Intrinsic Value
Outstanding, January 1, 2016			3,971,583			$	4.34				8.01				2,964,146
Granted			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
Granted			2,597,500				1.32
Cancelled			(3,329,794	)			2.85
Outstanding, December 31, 2017			5,174,592				2.83				7.95				2,648
Granted			3,577,159				0.69
Cancelled			(1,515,650	)			2.96
Outstanding, December 31, 2018			7,236,101				1.74				7.97				6,400
Exercisable, December 31, 2018			3,021,818				2.88				6.55				-

Warrant [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, January 1, 2016			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
Granted			18,496,575				1.05
Exercised			(9,364	)			0.78
Cancelled			(1,789,623	)			2.22
Outstanding, December 31, 2017			25,662,340				1.89				3.62				995,373
Granted			30,360,466				0.67
Exercised			(7,332	)			0.66
Cancelled			(194,598	)			9.00
Outstanding, December 31, 2018			55,820,876				1.20				2.04				569,038
Exercisable, December 31, 2018			55,613,377				1.19				2.03				566,676

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- Definition

Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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