Fair Value Of Assets And Liabilities (Summary Of Differences Between The Fair Value Carrying Amount Of Mortgages Held For Sale And Aggregate Unpaid Principal Amount) (Details) (USD $)	Sep. 30, 2011	Sep. 30, 2010	Jun. 30, 2010
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Loans held for sale, net	$ 217,320,000	$ 279,642,000
Loans held for sale, net			621,600,000
Book Value [Member] | Loans Held For Sale Reported At Fair Value [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Loans held for sale, net	217,320,000	279,642,000
Nonaccrual loans	40,178,000	28,195,000
Loans 90 days or more past due and still accruing	12,205,000	17,007,000
Aggregate Unpaid Principal [Member] | Loans Held For Sale Reported At Fair Value [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Loans held for sale, net	294,411,000	337,525,000
Nonaccrual loans	84,216,000	55,486,000
Loans 90 days or more past due and still accruing	27,260,000	40,264,000
Fair Value Carrying Amount Less Aggregate Unpaid Principal [Member] | Loans Held For Sale Reported At Fair Value [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Loans held for sale, net	(77,091,000)	(57,883,000)
Nonaccrual loans	(44,038,000)	(27,291,000)
Loans 90 days or more past due and still accruing	$ (15,055,000)	$ (23,257,000)