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SHAREHOLDERS' EQUITY (Details 1)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dividend yield 10.00% 10.00% 8.00%
Expected volatility* 58.00% [1] 59.00% [1] 61.00% [1]
Average risk-free interest rate 0.90% 1.00% 1.80%
Expected average term - in years 3 years 10 months 17 days 3 years 9 months 29 days 3 years 1 month 21 days
[1] Volatility is based on historical volatility of the Company's share price for periods matching the expected term of the option until exercise.