STOCKHOLDERS' EQUITY (Schedule of Fair Value Assumptions) (Details)
1 Months Ended
Jul. 11, 2011
Feb. 08, 2011
Feb. 10, 2010
STOCKHOLDERS' EQUITY [Abstract]      
Expected volatility 59.50% 59.50% 73.00%
Expected dividends yield 0.00% 0.00% 0.00%
Time to maturity 5 years 3 years 5 years
Risk-free interest rate per annum 2.294% 1.745% 2.218%
Fair value of underlying common shares (per share) 2.44 4.85 1.95