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Other Comprehensive Income (Loss) (Detail) (USD $)
In Thousands, unless otherwise specified
Oct. 31, 2012
Oct. 31, 2011
Accumulated other comprehensive income loss net of tax    
Unrealized gain on investments   $ 215
Deferred gain (loss) on cash flow hedges (1,338) (12,842)
Foreign currency translation adjustments (14,123) (8,318)
Total comprehensive income $ (15,461) $ (20,945)