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SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Detail)
In Millions
3 Months Ended 6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
Earnings Per Share Disclosure [Line Items]        
Options to purchase shares, excluded from the diluted earnings per share calculations 0.1 0.1 0.1 0.1