|
Stock Options (Details) (Service-based vesting condition options [Member])
|
3 Months Ended | |
|---|---|---|
|
Feb. 28, 2013
|
Feb. 29, 2012
|
|
|
Service-based vesting condition options [Member]
|
||
| Weighted average values: | ||
| Expected dividends | 0.00% | 0.00% |
| Expected volatility | 113.80% | 111.50% |
| Risk free interest rate | 0.80% | 0.93% |
| Expected life | 5 years | 5 years 9 months 18 days |
| X | ||||||||||
|
- 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). Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Risk-free interest rate assumption used in valuing an instrument. 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 | ||||||||||
|
- Details
|