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SHARE CAPITAL (Detail) - Fair value of each option
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Dividend yield 1.90% 3.25% 3.25%
Risk free interest rate 2.60% 2.67% 2.38%
Volatility 50.03% 71.09% 94.27%
Expected lives 6.0 years 6.0 years 6.0 years