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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Jan. 31, 2013
Jan. 31, 2012
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]    
Realized loss (gains) on derivative instruments reclassified into operations, tax $ (346) $ 247
Unrealized (loss) gains on derivative instruments, tax $ (560) $ 987