For an unclassified balance sheet, this item represents investments in debt and equity securities which are categorized neither as held-to-maturity nor trading.

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This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for less than twelve months.

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This item represents the difference between the gross realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities.

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This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

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Investments AFS (Details) (USD $)	3 Months Ended		6 Months Ended
Investments AFS (Details) (USD $)	Apr. 30, 2012	Apr. 30, 2011	Apr. 30, 2012	Apr. 30, 2011	Apr. 30, 2012 Available-for-sale Securities [Member]	Oct. 31, 2011 Available-for-sale Securities [Member]
Available For Sale Securities Gross Realized Gain Loss Net Abstract
Available-for-sale securities realized gains	$ 162,000	$ 85,000	$ 247,000	$ 2,106,000
Available-for-sale securities realized losses	(101,000)	0	(123,000)	(1,554,000)
Available-for-sale securities net realized gains (losses)	61,000	85,000	124,000	552,000
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale securities at cost					29,141,000	34,368,000
Available-for-sale securities unrealized gross gains					8,358,000	5,518,000
Available-for-sale securities unrealized gross losses					(176,000)	(45,000)
Available-for-sale securities at fair value					37,323,000	39,841,000
Available-for-sale securities fair value associated with the unrealized losses					$ 7,800,000