Series B Warrants (Details) - Series B Warrants - $ / shares |
9 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2017 |
Sep. 30, 2016 |
Dec. 31, 2016 |
Dec. 31, 2015 |
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| Class of Warrant or Right [Line Items] | ||||
| Dividend yield | 0.00% | 0.00% | 0.00% | 0.00% |
| Volatility factor | 70.00% | 70.00% | 70.00% | 70.00% |
| Risk-free interest rate | 1.58% | 1.616% | 1.75% | |
| Expected term (years) | 3 years 1 month 24 days | 3 years 7 months 17 days | 4 years 7 months 10 days | |
| Weighted-average fair value of warrants | $ 0.17 | $ 0.13 | $ 0.17 | $ 0.46 |
| Minimum | ||||
| Class of Warrant or Right [Line Items] | ||||
| Risk-free interest rate | 1.11% | |||
| Expected term (years) | 4 years 1 month 21 days | |||
| Maximum | ||||
| Class of Warrant or Right [Line Items] | ||||
| Risk-free interest rate | 1.29% | |||
| Expected term (years) | 4 years 1 month 24 days | |||
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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. No definition available.
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- Definition Expected dividends to be paid to holders of the underlying shares or financial instruments (expressed as a percentage of the share or instrument's price). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Risk-free interest rate assumption used in valuing an instrument. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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