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Equity (Tables) | 3 Months Ended
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Mar. 31, 2015
Warrants [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Summary of option activities |
|  | Number of Units |  |  | Weighted Average Exercise Price |  |  | Weighted Average Remaining Contractual Term (in years) |  |  | Aggregate Intrinsic Value |
Outstanding, December 31, 2014 |  |  | 7,634,058 |  |  | $ | 1.64 |  |  |  | 3.97 |  |  | $ | 34,317,224 |
Granted |  |  | 3,333,333 |  |  |  | 6.50 |  |  |  | 3.87 |  |  |  | - |
Exercised |  |  | (1,080,843 | ) |  |  |  |  |  |  | - |  |  |  | - |
Outstanding, March 31, 2015 |  |  | 9,886,548 |  |  |  | 3.43 |  |  |  | 3.69 |  |  |  | 8,239,536 |
Exercisable, March 31, 2015 |  |  | 9,599,811 |  |  | $ | 3.30 |  |  |  | 3.53 |  |  | $ | 8,239,536 |
Stock Options [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Summary of option activities |
|  | Number of Units |  |  | Weighted Average Exercise Price |  |  | Weighted Average Remaining Contractual Term (in years) |  |  | Aggregate Intrinsic Value |
Outstanding, December 31, 2014 |  |  | 3,013,084 |  |  | $ | 5.98 |  |  |  | 8.35 |  |  | $ | 4,728,842 |
Granted |  |  | 536,000 |  |  |  | 3.57 |  |  |  | 9.89 |  |  |  | - |
Outstanding, March 31, 2015 |  |  | 3,549,084 |  |  |  | 5.62 |  |  |  | 8.37 |  |  |  | 1,398,935 |
Exercisable, March 31, 2015 |  |  | 1,143,885 |  |  | $ | 2.79 |  |  |  | 6.99 |  |  | $ | 1,102,619 |

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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 + Details
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