Derivative liability - Components of derivative liabilities (Details) - USD ($) $ / shares in Units, $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
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| Derivative Instruments and Hedging Activities Disclosure [Abstract] | ||
| Fair value of derivative liability | $ 100 | $ 6,241 |
| Significant assumptions (or ranges): | ||
| Trading market values (in dollars per share) | $ 3.55 | $ 4.85 |
| Term (years) | 58 days | 1 year 58 days |
| Expected volatility | 67.00% | 26.80% |
| Risk-free rate | 0.05% | 0.32% |
| Discount rate | 0.91% | 1.18% |
| Effective Exercise price (in dollars per share) | $ 5.00 | $ 5.00 |
| Trigger price (in dollars per share) | $ 6.25 | $ 6.25 |
| Expected months until effective registration | 0 months | 0 months |
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- Definition The expected number of months until effective registration No definition available.
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- Definition The trading market price per share. No definition available.
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- Definition The minimum price per share required per agreement. No definition available.
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- References No definition available.
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- References No definition available.
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- Definition Agreed upon price for the exchange of the underlying asset. 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 Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Fair value of financial and nonfinancial obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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