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STOCK-BASED COMPENSATION (Details 2) (Employee Stock Option Plan)
6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Employee Stock Option Plan
   
Fair value of options weighted average assumptions:    
Pricing model used for valuation of options Black-Scholes  
Risk-free interest rate (as a percent) 1.51% 1.25%
Expected life of employee stock options 2 years 8 months 12 days 2 years 9 months 18 days
Expected volatility of the Company's share price (as a percent) 35.00% 37.50%
Expected dividend yield (as a percent) 1.79% 2.17%