Financial Assets And Liabilities (Ineffective Portions And Portions Excluded From Effectiveness Testing Of Derivative Hedge Gains (Losses) Recorded In Other Income (Expense), Net) (Details) (Foreign Exchange Contracts [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Apr. 30, 2012		Apr. 30, 2011		Apr. 30, 2012		Apr. 30, 2011
Foreign Exchange Contracts [Member]
Financial Assets And Liabilities [Line Items]
Amount of gain (loss) recognized in income statement on derivatives (ineffective portion)	$ (22)	[1]	$ (5)	[1]	$ 54	[1]	$ (46)	[1]
Amount of gain (loss) recognized in income statement on derivatives (excluded from effectiveness testing)	$ 466	[2]	$ 265	[2]	$ 867	[2]	$ (19)	[2]

[1] The ineffective portion includes forecast inaccuracies.

[2] The portion excluded from effectiveness includes the discount earned or premium paid for the contracts.