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Stock Based Compensation (Details) (Stock options [Member])
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6 Months Ended | |
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Jun. 30, 2014
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Jun. 30, 2013
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Stock options [Member]
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| Weighted-average assumptions used to fair value calculation for options granted | ||
| Expected dividend yield | 0.00% | 0.00% |
| Expected stock price volatility | 112.00% | 108.00% |
| Risk-free interest rate, minimum | 2.53% | 2.68% |
| Risk-free interest rate, maximum | 3.63% | 2.82% |
| Expected life of options (Years) | 10 years | |
| Expected life of options, minimum (Years) | 8 months 12 days | |
| Expected life of options, maximum (Years) | 9 years 10 months 24 days | |
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- Definition
The maximum period of time an equity-based award is expected to be outstanding. An equity-based award's expected term is generally determined based on, among other factors, the instrument's contractual term and the effects of employees' expected exercise and post-vesting employment termination behavior. No definition available.
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- Definition
The minimum period of time an equity-based award is expected to be outstanding. An equity-based award's expected term is generally determined based on, among other factors, the instrument's contractual term and the effects of employees' expected exercise and post-vesting employment termination behavior. No definition available.
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- Details
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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
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 maximum risk-free interest rate assumption that is used in valuing an option on its own shares. No definition available.
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- Definition
The minimum risk-free interest rate assumption that is used in valuing an option on its own shares. No definition available.
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