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Loans Receivable (excluding Covered Loans) (Troubled Debt Restructurings) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2014 contract | Mar. 31, 2013 contract | Mar. 31, 2014 contract | Mar. 31, 2013 contract
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Number of Contracts (in contracts) | 45 | 140 | 164 | 251
Pre-Modification Outstanding Recorded Investment | $ 13,124 | $ 37,609 | $ 38,710 | $ 68,654
Post-Modification Outstanding Recorded Investment | 13,124 | 37,609 | 38,710 | 68,654
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) | 43 | 130 | 151 | 230
Pre-Modification Outstanding Recorded Investment | 12,692 | 36,059 | 34,877 | 63,146
Post-Modification Outstanding Recorded Investment | 12,692 | 36,059 | 34,877 | 63,146
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 | 2,492
Post-Modification Outstanding Recorded Investment | 0 | 0 | 0 | 2,492
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) | 0 | 0 | 0 | 0
Pre-Modification Outstanding Recorded Investment | 0 | 0 | 0 | 0
Post-Modification Outstanding Recorded Investment | 0 | 0 | 0 | 0
Land - Consumer Lot Loans [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Number of Contracts (in contracts) | 1 | 9 | 6 | 18
Pre-Modification Outstanding Recorded Investment | 302 | 1,350 | 1,394 | 2,761
Post-Modification Outstanding Recorded Investment | 302 | 1,350 | 1,394 | 2,761
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 | 1,207 | 55
Post-Modification Outstanding Recorded Investment | 0 | 0 | 1,207 | 55
Commercial Real Estate [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Number of Contracts (in contracts) | 0 | 0 | 1 | 0
Pre-Modification Outstanding Recorded Investment | 0 | 0 | 804 | 0
Post-Modification Outstanding Recorded Investment | 0 | 0 | 804 | 0
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 | 1 | 1 | 1
Pre-Modification Outstanding Recorded Investment | 0 | 200 | 261 | 200
Post-Modification Outstanding Recorded Investment | 0 | 200 | 261 | 200
Consumer [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Number of Contracts (in contracts) | 1 | 0 | 3 | 0
Pre-Modification Outstanding Recorded Investment | 130 | 0 | 167 | 0
Post-Modification Outstanding Recorded Investment | $ 130 | $ 0 | $ 167 | $ 0
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

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