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STOCKHOLDERS' EQUITY (Details 1) (Stock Options)
3 Months Ended 12 Months Ended
Mar. 31, 2013
Dec. 31, 2012
Expected dividend yield 0.00% 0.00%
Lower Range
   
Risk-free interest rate 0.77% 0.61%
Expected Volatility 43.01% 40.77%
Expected term 5 years 6 months 5 years
Upper Range
   
Risk-free interest rate 0.81% 2.23%
Expected Volatility 44.94% 46.01%
Expected term 6 years 3 months 6 years 3 months