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Stockholders' Equity (Deficiency) (Summary of Compensation Expense for Stock Options Granted to Non-employees from 10Q) (Details) (Stock Incentive Plan To Non Employees [Member])
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3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
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Mar. 31, 2013
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Mar. 31, 2012
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Dec. 31, 2012
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Dec. 31, 2011
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|
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Stock Incentive Plan To Non Employees [Member]
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| Expected life (years) | 3 years 6 months | |||
| Expected volatility | 44.20% | |||
| Weighted-average volatility | 44.20% | 47.40% | ||
| Risk-free interest rate | 0.60% | |||
| Dividend yield | 0.00% | 0.00% | ||