|
12. Stockholders' Equity (Deficiency) (Details 2)
|
3 Months Ended | 4 Months Ended | 12 Months Ended | |
|---|---|---|---|---|
|
Jul. 31, 2013
|
Apr. 30, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
|
|
| Expected forfeiture rate | 3.90% | 1.70% | 0.00% | |
|
Stock Incentive Plan To Employees And Directors [Member]
|
||||
| Expected life (years) minimum | 3 years 6 months | 3 years 6 months | 2 years 6 months | |
| Expected life (years) maximum | 3 years 6 months | 3 years 9 months | 3 years 9 months 18 days | |
| Expected volatility minimum | 46.50% | 46.30% | 44.20% | |
| Expected volatility maximum | 46.50% | 46.50% | 50.90% | |
| Weighted-average volatility | 46.50% | 46.50% | 49.00% | |
| Risk-free interest rate, Minimum | 0.38% | 0.36% | 0.31% | |
| Risk-free interest rate, Maximum | 0.38% | 0.44% | 0.60% | |
| Dividend yield | 0.00% | 0.00% | 0.00% | |
| Expected forfeiture rate | 3.90% | 3.90% | 1.70% | |
|
Stock Incentive Plan To Non Employees [Member]
|
||||
| Expected life (years) minimum | 4 years | 2 years 8 months 12 days | ||
| Expected life (years) maximum | 4 years | 5 years | ||
| Expected volatility minimum | 46.50% | 44.20% | ||
| Expected volatility maximum | 46.50% | 50.00% | ||
| Weighted-average volatility | 46.50% | 47.40% | ||
| Risk-free interest rate, Minimum | 0.38% | 0.37% | ||
| Risk-free interest rate, Maximum | 0.38% | 0.60% | ||
| Dividend yield | 0.00% | 0.00% | ||
| Expected forfeiture rate | ||||