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Annual report pursuant to section 13 and 15(d)

12. Stockholders' Equity (Deficiency) (Details 2)

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12. Stockholders' Equity (Deficiency) (Details 2) (Stock Incentive Plan To Employees And Directors)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Stock Incentive Plan To Employees And Directors
   
Expected life (years) minimum 2 years 5 months 0 years
Expected life (years) maximum 3 years 9 months 18 days 0 years
Expected volatility minimum 44.20% 0.00%
Expected volatility maximum 50.90% 0.00%
Weighted-average volatility 49.00% 0.00%
Risk-free interest rate, Minimum 0.31% 0.00%
Risk-free interest rate, Maximum 0.60% 0.00%
Dividend yield 0.00% 0.00%
Expected forfeiture rate 1.70% 0.00%