Loans And Allowance For Loan Losses (Schedule Of Credit Risk Profile Based On Payment Activity) (Details) (USD $) In Thousands	Sep. 30, 2011	Sep. 30, 2010
Performing [Member] | Direct Consumer - Originated [Member]
Mortgage Loans on Real Estate [Line Items]
Credit Risk Profile Based On Payment Activity	$ 615,512	$ 593,085
Performing [Member] | Direct Consumer - Acquired [Member]
Mortgage Loans on Real Estate [Line Items]
Credit Risk Profile Based On Payment Activity	415,668
Performing [Member] | Direct Consumer - Covered [Member]
Mortgage Loans on Real Estate [Line Items]
Credit Risk Profile Based On Payment Activity	157,625	141,145
Performing [Member] | Total Direct Consumer [Member]
Mortgage Loans on Real Estate [Line Items]
Credit Risk Profile Based On Payment Activity	1,188,805	734,230
Performing [Member] | Indirect Consumer [Member]
Mortgage Loans on Real Estate [Line Items]
Credit Risk Profile Based On Payment Activity	286,968	309,454
Performing [Member] | Finance Company [Member]
Mortgage Loans on Real Estate [Line Items]
Credit Risk Profile Based On Payment Activity	94,521	99,235
Nonperforming [Member] | Direct Consumer - Originated [Member]
Mortgage Loans on Real Estate [Line Items]
Credit Risk Profile Based On Payment Activity	2,565	4,862
Nonperforming [Member] | Direct Consumer - Acquired [Member]
Mortgage Loans on Real Estate [Line Items]
Credit Risk Profile Based On Payment Activity	1,061
Nonperforming [Member] | Direct Consumer - Covered [Member]
Mortgage Loans on Real Estate [Line Items]
Credit Risk Profile Based On Payment Activity		170
Nonperforming [Member] | Total Direct Consumer [Member]
Mortgage Loans on Real Estate [Line Items]
Credit Risk Profile Based On Payment Activity	3,626	5,032
Nonperforming [Member] | Finance Company [Member]
Mortgage Loans on Real Estate [Line Items]
Credit Risk Profile Based On Payment Activity	1,596	1,759
Direct Consumer - Originated [Member]
Mortgage Loans on Real Estate [Line Items]
Credit Risk Profile Based On Payment Activity	618,077	597,947
Direct Consumer - Acquired [Member]
Mortgage Loans on Real Estate [Line Items]
Credit Risk Profile Based On Payment Activity	416,729
Direct Consumer - Covered [Member]
Mortgage Loans on Real Estate [Line Items]
Credit Risk Profile Based On Payment Activity	157,625	141,315
Total Direct Consumer [Member]
Mortgage Loans on Real Estate [Line Items]
Credit Risk Profile Based On Payment Activity	1,192,431	739,262
Indirect Consumer [Member]
Mortgage Loans on Real Estate [Line Items]
Credit Risk Profile Based On Payment Activity	286,968	309,454
Finance Company [Member]
Mortgage Loans on Real Estate [Line Items]
Credit Risk Profile Based On Payment Activity	$ 96,117	$ 100,994