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Fair Value Measurement (Details Textual) - $ / shares | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2015 | Dec. 31, 2014
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Expected term | 4 years |
Risk-free interest rate | 1.26% |
Stock Price | $ 0.38 |
Volatility | 100.00% |
Minimum [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Expected term | 1 year 3 months 18 days |
Risk-free interest rate | 0.49% |
Volatility | 98.00% |
Maximum [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Expected term | 7 years |
Risk-free interest rate | 2.09% |
Volatility | 143.00% |
Warrant [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Stock Price | $ 0.40 | $ 0.25
Warrant [Member] | Minimum [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Expected term | 3 years 4 months 21 days | 3 years 4 months 21 days
Risk-free interest rate | 1.17% | 1.17%
Volatility | 98.00% | 98.00%
Warrant [Member] | Maximum [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Expected term | 4 years 7 months 21 days | 4 years 7 months 21 days
Risk-free interest rate | 1.55% | 1.55%
Volatility | 107.30% | 107.30%

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- Definition Period the instrument, asset or liability is expected to be outstanding, 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 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Risk-free interest rate assumption used in valuing an instrument. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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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. + Details
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- Definition Price of a single share of a number of saleable stocks of a company. + References No definition available. + Details
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