Financial Assets And Liabilities (Ineffective Portion And Portion Excluded From Effectiveness Testing Of Derivative Hedge Gains (Losses)) (Details) (Foreign Exchange Contracts [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jan. 31, 2012		Jan. 31, 2011
Foreign Exchange Contracts [Member]
Financial Assets And Liabilities [Line Items]
Amount of gain recognized in statement of operations on derivatives (ineffective portion)	$ 76	[1]	$ (40)	[1]
Amount of (loss) recognized in statement of operations on derivatives (excluded from effectiveness testing)	$ 401	[2]	$ (284)	[2]

[1] The ineffective portion includes forecast inaccuracies.

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