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EQUITY (Schedule of Assumptions Used to Estimate Fair Value) (Details)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Employee [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk free interest	0.68%	0.99%	1.70%
Dividend yield	0.00%	0.00%	0.00%
Volatility	45.00%	44.00%	45.00%
Expected term (in years)	5 years	5 years	4 years 9 months
Non-Employee [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk free interest	0.79%		3.16%
Dividend yield	0.00%		0.00%
Volatility	45.00%		48.00%
Expected term (in years)	6 years		7 years

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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