Acquisitions 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 [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Contractually Required Payments Receivable at Acquisition	$ 112,882
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Non-Accretable Yield	74,760
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Cash Flows Expected to be Collected at Acquisition	38,122
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Internet Component Expected to be Collected	5,233
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value	$ 32,889