Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions |
Jul. 27, 2010 |
Dec. 31, 2014 |
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| Stockholders Equity Note [Line Items] | ||
| Number of shares of common stock to be purchased by issuing warrants | 250,000 | |
| Exercise price of stock warrants (in usd per share) | $ 9.60 | |
| Fair value of warrants outstanding | $ 2.0 | |
| Stock warrants [Member] | ||
| Stockholders Equity Note [Line Items] | ||
| Percentage of weighted average expected stock volatility for warrant | 111.46% | |
| Contract term of expected life assumption | 5 years | |
| Percentage of risk free rate for warrants | 2.07% | |
| Dividend yield | 0.00% | |
| Outstanding stock warrants | 0 |
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- Definition Stockholders Equity Note [Line Items] No definition available.
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- Definition Exercise price per share or per unit of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Number of warrants or rights outstanding. 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 Risk-free interest rate assumption used in valuing an instrument. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Weighted average expected volatility of stock price. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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