Loans Receivable (excluding Covered Loans) (Troubled Debt Restructurings) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jun. 30, 2014 contract	Jun. 30, 2013 contract	Jun. 30, 2014 contract	Jun. 30, 2013 contract
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Contracts (in contracts)	58	117	221	362
Pre-Modification Outstanding Recorded Investment	$ 13,420	$ 30,726	$ 51,500	$ 96,258
Post-Modification Outstanding Recorded Investment	13,420	30,726	51,500	96,258
Loan Modification, Basis Point Reduction, Minimum			1.00%
Loan Modification, Basis Point Reduction, Maximum			2.00%
Single Family Residential Loans as Percentage of Restructured Loans	86.10%		86.10%
Single-Family Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Contracts (in contracts)	48	111	199	337
Pre-Modification Outstanding Recorded Investment	10,693	27,619	45,132	88,085
Post-Modification Outstanding Recorded Investment	10,693	27,619	45,132	88,085
Construction - Speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Contracts (in contracts)	0	0	0	1
Pre-Modification Outstanding Recorded Investment	0	0	0	2,481
Post-Modification Outstanding Recorded Investment	0	0	0	2,481
Construction - Custom [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Contracts (in contracts)	0	0	0	0
Pre-Modification Outstanding Recorded Investment	0	0	0	0
Post-Modification Outstanding Recorded Investment	0	0	0	0
Land - Acquisition & Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Contracts (in contracts)	3	0	3	0
Pre-Modification Outstanding Recorded Investment	756	0	756	0
Post-Modification Outstanding Recorded Investment	756	0	756	0
Land - Consumer Lot Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Contracts (in contracts)	5	4	10	20
Pre-Modification Outstanding Recorded Investment	573	685	1,746	3,027
Post-Modification Outstanding Recorded Investment	573	685	1,746	3,027
Multi-Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Contracts (in contracts)	0	0	2	1
Pre-Modification Outstanding Recorded Investment	0	0	1,201	44
Post-Modification Outstanding Recorded Investment	0	0	1,201	44
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Contracts (in contracts)	2	1	3	1
Pre-Modification Outstanding Recorded Investment	1,398	2,411	2,197	2,411
Post-Modification Outstanding Recorded Investment	1,398	2,411	2,197	2,411
Commercial & Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Contracts (in contracts)	0	0	0	0
Pre-Modification Outstanding Recorded Investment	0	0	0	0
Post-Modification Outstanding Recorded Investment	0	0	0	0
HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Contracts (in contracts)	0	0	1	1
Pre-Modification Outstanding Recorded Investment	0	0	261	199
Post-Modification Outstanding Recorded Investment	0	0	261	199
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Contracts (in contracts)	0	1	3	1
Pre-Modification Outstanding Recorded Investment	0	11	207	11
Post-Modification Outstanding Recorded Investment	$ 0	$ 11	$ 207	$ 11
Minimum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term for Payment and Rate Reduction				6 months
Maximum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term for Payment and Rate Reduction				24 months