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Loans Receivable (excluding Covered Loans) (Loans on Non-accrual Status) (Details) (USD $) | Jun. 30, 2014 | Sep. 30, 2013 | Jun. 30, 2013
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccrual loans by portfolio segment | $ 94,226,000 | $ 131,299,000 | $ 131,299,000
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 | 78,317,000 | 100,460,000 |
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 83.20% | 76.50% |
Construction - Speculative [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccrual loans by portfolio segment | 1,966,000 | 4,560,000 |
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 | 143,000 | 0 |
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 0.20% | 0.00% |
Land - Acquisition & Development [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccrual loans by portfolio segment | 2,295,000 | 2,903,000 |
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 2.40% | 2.20% |
Land - Consumer Lot Loans [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccrual loans by portfolio segment | 1,879,000 | 3,337,000 |
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 2.00% | 2.50% |
Multi-Family [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccrual loans by portfolio segment | 2,103,000 | 6,573,000 |
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 | 5,442,000 | 11,736,000 |
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 5.80% | 8.90% |
Commercial & Industrial [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccrual loans by portfolio segment | 516,000 | 477,000 |
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 0.50% | 0.40% |
HELOC [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccrual loans by portfolio segment | 970,000 | 263,000 |
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 1.00% | 0.20% |
Consumer [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Nonaccrual loans by portfolio segment | $ 595,000 | $ 990,000 |
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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