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Stock Warrants (Details) | 6 Months Ended
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Jun. 30, 2018
Date of Issuance August 27, 2014 to September 2, 2019 [Member] |
Stock Warrants [Line Items] |
Terms of warrants | 5 years
Expected volatility | 72.00%
Risk-free interest rate | 1.69%
Expected dividend yield | 0.81%
Date of Issuance September 3, 2014 to June 26, 2019 [Member] |
Stock Warrants [Line Items] |
Terms of warrants | 4 years 9 months 22 days
Expected volatility | 69.80%
Risk-free interest rate | 1.62%
Expected dividend yield | 0.81%

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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). + References No definition available. + Details
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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 No definition available. + 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 No definition available. + Details
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