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FAIR VALUE OF FINANCIAL INSTRUMENT (Income Loss) (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Derivative Instruments Gain Loss [Line Items]      
Derivative Instruments Gain Loss Recognized In Income Net $ (654) $ 3,114 $ 2,026