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Share-based Compensation - Schedule of Share Based Compensation Expense Based on Fair Value of Options (Detail) (USD $)
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12 Months Ended | ||||
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Dec. 13, 2013
Stock Options [Member]
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Dec. 31, 2012
Stock Options [Member]
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Dec. 13, 2013
Stock Options [Member]
Minimum [Member]
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Dec. 13, 2013
Stock Options [Member]
Maximum [Member]
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Dec. 31, 2013
Inducement Stock Options [Member]
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||||
| Expected volatility | 60.00% | 29.00% | 57.00% | 56.00% | |
| Risk free interest rate | 0.25% | 0.25% | 0.45% | 0.25% | |
| Expected lives at date of grant (in years) | 2 years 10 months 21 days | 3 years 5 months 1 day | 5 years 4 months 2 days | ||
| Weighted average fair value of options granted | $ 1.52 | $ 2.21 | $ 2.25 | ||
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- Definition
Agreed-upon price for the exchange of the underlying asset relating to the share-based payment award. No definition available.
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- Definition
Expected term of share-based compensation awards, 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
The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The risk-free interest rate assumption that is used in valuing an option on its own shares. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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