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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])	3 Months Ended		12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012	Dec. 31, 2011
Stock Incentive Plan To Non Employees [Member]
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%

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.

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