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Note 9 (Detail) (USD $)
In Millions, unless otherwise specified
Jul. 31, 2012
Oct. 31, 2011
Cannot Currently be Sold at Reasonable Terms [Member]
   
Loans Held for Sale that cannot Currently be Sold at Reasonable Terms in the Secondary Mortgage Market $ 2.4 $ 1.0
Pledged Against Mortgage Warehouse LOC [Member]
   
Pledged Financial Instruments, Not Separately Reported, Loans Receivable, for Repurchase Agreements $ 78.1 $ 52.7