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Loans Receivable (excluding Covered Loans) - Loans on Non-accrual Status (Details) - USD ($) $ in Thousands | Jun. 30, 2015 | Sep. 30, 2014
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual of interest | $ 65,308 | $ 87,431
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 of interest | $ 56,638 | $ 74,067
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 86.70% | 84.80%
Construction - Speculative [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual of interest | $ 762 | $ 1,477
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 1.20% | 1.70%
Construction - Custom [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual of interest | $ 355 | $ 0
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 0.50% | 0.00%
Land - Acquisition & Development [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual of interest | $ 0 | $ 811
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 0.00% | 0.90%
Land - Consumer Lot Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual of interest | $ 1,308 | $ 2,637
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 2.00% | 3.00%
Multi-Family [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual of interest | $ 786 | $ 1,742
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 1.20% | 2.00%
Commercial Real Estate [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual of interest | $ 2,852 | $ 5,106
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 4.40% | 5.80%
Commercial & Industrial [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual of interest | $ 1,205 | $ 7
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 1.80% | 0.00%
HELOC [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual of interest | $ 889 | $ 795
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 1.40% | 0.90%
Consumer [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Nonaccrual of interest | $ 513 | $ 789
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status | 0.80% | 0.90%

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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=49124121&loc=d3e5111-111524 + Details
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