|
Shareholders' Equity and Capital Stock (Details 5)
|
6 Months Ended | |
|---|---|---|
|
Jun. 30, 2014
|
Jun. 30, 2013
|
|
| Schedule Of Share Based Compensation Shares Authorized Under Restricted Stock Units By Grant Date [Line Items] | ||
| Expected option life (years) | 3 years 5 months 26 days | 3 years 4 months 28 days |
| Expected volatility | 66.00% | 63.00% |
| Risk-free interest rate | 1.40% | 1.10% |
| Forfeiture rate (options) | 4.50% | 4.40% |
| Expected dividend rate | 0.00% | 0.00% |
| X | ||||||||||
|
- Definition
The forfeiture rate assumption that is used in valuing an option on its own shares. No definition available.
|
| X | ||||||||||
|
- 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
|
| X | ||||||||||
|
- 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
|
| X | ||||||||||
|
- 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
|
| X | ||||||||||
|
- 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
|
| X | ||||||||||
|
- Details
|