Derivative Financial Instruments Not Designated for Hedge Accounting (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2010
Foreign Exchange Contracts [Member]
Derivative Instruments Not Designated As Hedging Instruments [Line Items]
Other assets fair value	$ 226	$ 24
Other liabilities fair value	300	124
Net gains (losses) recognized	288	(1,495)	(810)
Stock Index Futures Contracts [Member]
Derivative Instruments Not Designated As Hedging Instruments [Line Items]
Other assets fair value	1,505	157
Other liabilities fair value	367	6,363
Net gains (losses) recognized	(11,361)	(2,658)	(1,923)
Commodity Futures Contracts [Member]
Derivative Instruments Not Designated As Hedging Instruments [Line Items]
Other assets fair value	498	879
Other liabilities fair value	121	167
Net gains (losses) recognized	693	305	(836)
Total [Member]
Derivative Instruments Not Designated As Hedging Instruments [Line Items]
Other assets fair value	2,229	1,060
Other liabilities fair value	788	6,654
Net gains (losses) recognized	$ (10,380)	$ (3,848)	$ (3,569)