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Loans Receivable - Loans on Non-accrual Status (Details) - USD ($) $ in Thousands | Sep. 30, 2016 | Sep. 30, 2015
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual loans by portfolio segment | $ 42,414 | $ 67,810
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 100.00% | 100.00%
Single-family residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual loans by portfolio segment | $ 33,148 | $ 59,074
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 78.20% | 87.10%
Construction - speculative |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual loans by portfolio segment | $ 0 | $ 754
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 0.00% | 1.10%
Construction - custom |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual loans by portfolio segment | $ 0 | $ 732
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 0.00% | 1.10%
Land - acquisition & development |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual loans by portfolio segment | $ 58 | $ 0
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 0.10% | 0.00%
Land - consumer lot loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual loans by portfolio segment | $ 510 | $ 1,273
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 1.20% | 1.90%
Multi-family |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual loans by portfolio segment | $ 776 | $ 2,558
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 1.80% | 3.80%
Commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual loans by portfolio segment | $ 7,100 | $ 2,176
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 16.70% | 3.20%
Commercial & industrial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual loans by portfolio segment | $ 583 | $ 0
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 1.40% | 0.00%
HELOC |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual loans by portfolio segment | $ 239 | $ 563
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 0.60% | 0.80%
Consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual loans by portfolio segment | $ 0 | $ 680
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 0.00% | 1.00%

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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=66008989&loc=d3e5111-111524 + Details
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