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Investment Securities, Trading (Details) (USD $)
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12 Months Ended | ||
|---|---|---|---|
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Oct. 31, 2012
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Oct. 31, 2011
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Oct. 31, 2010
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| Schedule Of Trading Securities And Other Trading Assets [Line Items] | |||
| Total investment securities, trading | $ 190,253,000 | $ 193,209,000 | |
| Trading securities net unrealized gain | 12,100,000 | 6,800,000 | 1,600,000 |
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Equity Securities [Member]
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| Schedule Of Trading Securities And Other Trading Assets [Line Items] | |||
| Total investment securities, trading | 119,448,000 | 107,987,000 | |
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Debt Securities [Member]
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| Schedule Of Trading Securities And Other Trading Assets [Line Items] | |||
| Total investment securities, trading | $ 70,805,000 | $ 85,222,000 | |