Off-Balance Sheet Arrangements, Commitments And Contingencies (Details) $ in Thousands	Sep. 30, 2015 USD ($)
Certificates and other time deposits
1 year or less	$ 421,395
More than 1 year but less than 3 years	201,362
3 years or more but less than 5 years	26,325
Total	649,082
Federal Home Loan Bank advances
1 year or less	156,341
More than 1 year but less than 3 years	2,122
3 years or more but less than 5 years	94
5 years or more	532
Total	159,089
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
1 year or less	1,270
More than 1 year but less than 3 years	2,209
3 years or more but less than 5 years	1,265
5 years or more	1,819
Total	6,563
Contractual obligations (other than securities sold under agreements to repurchase)
1 year or less	579,006
More than 1 year but less than 3 years	205,693
3 years or more but less than 5 years	27,684
5 years or more	2,351
Total	$ 814,734