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Stockholder's Equity (Details 2) (USD $) | 0 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 0 Months Ended | 3 Months Ended | 9 Months Ended | 0 Months Ended
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Mar. 05, 2014 Chief Executive Officer | May 27, 2014 Chief Financial Officer | Sep. 30, 2014 Director stock options | Sep. 30, 2014 Director stock options Five members of Board of Directors | Sep. 30, 2014 Director stock options Five members of Board of Directors | Sep. 30, 2014 Director stock options Four independent members of Board of Directors item | Sep. 30, 2014 Director stock options One former independent members of Board of Directors item | Sep. 30, 2014 Employee stock options | Sep. 30, 2014 Employee stock options | Sep. 30, 2014 Employee stock options Minimum | Sep. 30, 2014 Employee stock options Maximum | Mar. 05, 2014 Employee stock options Chief Executive Officer | Sep. 30, 2014 Employee stock options Chief Executive Officer | Sep. 30, 2014 Employee stock options Chief Executive Officer | May 27, 2014 Employee stock options Chief Financial Officer
Share-based compensation |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of share granted |  |  |  | 333,195 | 434,051 |  |  |  |  |  |  | 500,000 | 1,734,273 | 2,849,050 | 250,000
Weighted average exercise price of shares granted (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  | $ 2.50 | $ 3.71 | $ 3.71 | $ 4.00
Number of members of board of directors to whom options are granted |  |  |  |  |  | 4 | 1 |  |  |  |  |  |  |  |
Term of options | 10 years | 10 years | 10 years |  |  |  |  |  |  |  |  | 3 years |  |  | 3 years
Vesting period |  |  |  |  | 3 years |  |  |  |  |  |  | 3 years |  |  | 3 years
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost |  |  |  |  |  |  |  |  | $ 11,465,258 |  |  |  |  |  |
Allocated Share-based Compensation Expense |  |  |  |  |  |  |  | 783,932 | 1,075,131 |  |  |  |  |  |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options |  |  |  |  |  |  |  | $ 10,390,397 | $ 10,390,397 |  |  |  |  |  |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition |  |  |  |  |  |  |  |  | 3 years |  |  |  |  |  |
Estimated fair value of underlying common stock |  |  |  |  |  |  |  |  |  | $ 2.10 | $ 3.47 |  |  |  |
Remaining life |  |  |  |  |  |  |  |  | 6 years |  |  |  |  |  |
Risk-free interest rate, Minimum |  |  |  |  |  |  |  |  | 1.85% |  |  |  |  |  |
Risk-free interest rate, Maximum |  |  |  |  |  |  |  |  | 2.07% |  |  |  |  |  |
Expected volatility, Minimum |  |  |  |  |  |  |  |  | 150.00% |  |  |  |  |  |
Expected volatility, Maximum |  |  |  |  |  |  |  |  | 155.00% |  |  |  |  |  |

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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 (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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 (a)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The estimated measure of the maximum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + References No definition available. + Details
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- Definition The minimum risk-free interest rate assumption that is used in valuing an option on its own shares. + References No definition available. + Details
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