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Deteriorated Loans Transferred In (Details) (USD $)
In Thousands, unless otherwise specified
Jul. 31, 2014
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period [Abstract]  
Contractually Required Principal and Interest Payments $ 112,882
Contractual Cash Flows Not Expected to be Collected 74,760
Cash Flows Expected to be Collected 38,122
Interest Component of Cash Flows Expected to be Collected 5,233
Fair Value of Acquired Credit-Impaired Loans $ 32,889