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Loans Receivable (excluding Covered Loans) (Loans on Non-accrual Status) (Details) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2014 | Sep. 30, 2013 | Mar. 31, 2013
--- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccrual loans by portfolio segment | $ 100,198 | $ 131,299 | $ 149,033
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 100.00% | 100.00% |
Single-Family Residential [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccrual loans by portfolio segment | 81,740 | 100,460 |
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 81.60% | 76.50% |
Construction - Speculative [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccrual loans by portfolio segment | 2,132 | 4,560 |
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 2.10% | 3.50% |
Construction - Custom [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccrual loans by portfolio segment | 265 | 0 |
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 0.30% | 0.00% |
Land - Acquisition & Development [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccrual loans by portfolio segment | 2,113 | 2,903 |
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 2.10% | 2.20% |
Land - Consumer Lot Loans [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccrual loans by portfolio segment | 3,007 | 3,337 |
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 3.00% | 2.50% |
Multi-Family [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccrual loans by portfolio segment | 2,199 | 6,573 |
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 2.20% | 5.00% |
Commercial Real Estate [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccrual loans by portfolio segment | 7,101 | 11,736 |
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 7.10% | 8.90% |
Commercial & Industrial [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccrual loans by portfolio segment | 579 | 477 |
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 0.60% | 0.40% |
HELOC [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccrual loans by portfolio segment | 441 | 263 |
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 0.40% | 0.20% |
Consumer [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccrual loans by portfolio segment | $ 621 | $ 990 |
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 0.60% | 0.80% |

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- Definition Reflects the carrying amount of loans deemed to be questionable as to collection on which no interest is continuing to be recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5111-111524 + Details
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- Definition Loans and Leases Receivable, Ratio of Type of Nonperforming Loans to All Nonperforming Loans + References No definition available. + Details
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