XML 20 R37.htm IDEA: XBRL DOCUMENT
v3.2.0.727

Allowance for Losses on Loans - Loans Evaluated for Impairment (Details) - USD ($) $ in Thousands | Jun. 30, 2015 | Mar. 31, 2015 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Sep. 30, 2013
--- | --- | --- | --- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 105,611 | $ 108,323 | $ 112,347 | $ 114,150 | $ 114,931 | $ 116,741
Loans receivable, gross | 9,256,701 |  | 8,669,717 |  |  |
Single-Family Residential [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | 52,004 | 54,762 | 62,763 | 62,360 | 63,348 | 64,184
Loans receivable, gross | 5,568,929 |  | 5,572,244 |  |  |
Construction - Speculative [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | 5,933 | 5,445 | 6,742 | 6,387 | 6,773 | 8,407
Loans receivable, gross | 181,668 |  | 140,060 |  |  |
Construction - Custom [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | 985 | 968 | 1,695 | 1,678 | 1,599 | 882
Loans receivable, gross | 375,425 |  | 385,824 |  |  |
Land - Acquisition & Development [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | 5,772 | 7,405 | 5,592 | 6,955 | 6,027 | 9,165
Loans receivable, gross | 90,252 |  | 80,359 |  |  |
Land - Consumer Lot Loans [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | 2,999 | 3,035 | 3,077 | 2,862 | 2,974 | 3,552
Loans receivable, gross | 105,463 |  | 111,130 |  |  |
Multi-Family [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | 5,035 | 4,673 | 4,248 | 4,141 | 4,187 | 3,816
Loans receivable, gross | 1,093,374 |  | 920,285 |  |  |
Commercial Real Estate [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | 7,268 | 6,734 | 7,548 | 6,689 | 5,924 | 5,595
Loans receivable, gross | 981,824 |  | 752,957 |  |  |
Commercial & Industrial [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | 21,662 | 21,146 | 16,527 | 18,696 | 20,403 | 16,614
Loans receivable, gross | 512,973 |  | 434,088 |  |  |
HELOC [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | 864 | 850 | 928 | 1,015 | 975 | 1,002
Loans receivable, gross | 137,837 |  | 134,455 |  |  |
Consumer [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | 3,089 | $ 3,305 | 3,227 | $ 3,367 | $ 2,721 | $ 3,524
Loans receivable, gross | 208,956 |  | 138,315 |  |  |
Loans Collectively Evaluated for Impairment [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | 105,611 |  | 112,287 |  |  |
Loans receivable, gross | $ 8,478,557 |  | $ 8,316,874 |  |  |
Ratio | 1.30% |  | 1.40% |  |  |
Loans Collectively Evaluated for Impairment [Member] | Single-Family Residential [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 52,004 |  | $ 62,067 |  |  |
Loans receivable, gross | $ 5,497,635 |  | $ 5,487,331 |  |  |
Ratio | 1.00% |  | 1.10% |  |  |
Loans Collectively Evaluated for Impairment [Member] | Construction - Speculative [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 5,933 |  | $ 6,682 |  |  |
Loans receivable, gross | $ 110,727 |  | $ 130,901 |  |  |
Ratio | 5.40% |  | 5.50% |  |  |
Loans Collectively Evaluated for Impairment [Member] | Construction - Custom [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 985 |  | $ 1,695 |  |  |
Loans receivable, gross | $ 204,914 |  | $ 385,464 |  |  |
Ratio | 0.50% |  | 0.50% |  |  |
Loans Collectively Evaluated for Impairment [Member] | Land - Acquisition & Development [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 5,772 |  | $ 5,592 |  |  |
Loans receivable, gross | $ 68,234 |  | $ 73,999 |  |  |
Ratio | 8.50% |  | 7.60% |  |  |
Loans Collectively Evaluated for Impairment [Member] | Land - Consumer Lot Loans [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 2,999 |  | $ 3,077 |  |  |
Loans receivable, gross | $ 91,392 |  | $ 95,684 |  |  |
Ratio | 3.30% |  | 3.20% |  |  |
Loans Collectively Evaluated for Impairment [Member] | Multi-Family [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 5,035 |  | $ 4,248 |  |  |
Loans receivable, gross | $ 1,008,452 |  | $ 911,162 |  |  |
Ratio | 0.50% |  | 0.50% |  |  |
Loans Collectively Evaluated for Impairment [Member] | Commercial Real Estate [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 7,268 |  | $ 7,548 |  |  |
Loans receivable, gross | $ 685,198 |  | $ 563,534 |  |  |
Ratio | 1.10% |  | 1.40% |  |  |
Loans Collectively Evaluated for Impairment [Member] | Commercial & Industrial [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 21,662 |  | $ 17,223 |  |  |
Loans receivable, gross | $ 484,902 |  | $ 421,816 |  |  |
Ratio | 4.50% |  | 4.60% |  |  |
Loans Collectively Evaluated for Impairment [Member] | HELOC [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 864 |  | $ 928 |  |  |
Loans receivable, gross | $ 121,241 |  | $ 114,393 |  |  |
Ratio | 0.70% |  | 0.90% |  |  |
Loans Collectively Evaluated for Impairment [Member] | Consumer [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 3,089 |  | $ 3,227 |  |  |
Loans receivable, gross | $ 205,862 |  | $ 132,590 |  |  |
Ratio | 1.50% |  | 2.40% |  |  |
Loans Individually Evaluated for Impairment [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 0 |  | $ 60 |  |  |
Loans receivable, gross | $ 88,008 |  | $ 134,736 |  |  |
Ratio | 0.00% |  | 0.00% |  |  |
Loans Individually Evaluated for Impairment [Member] | Single-Family Residential [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 0 |  | $ 0 |  |  |
Loans receivable, gross | $ 49,305 |  | $ 72,869 |  |  |
Ratio | 0.00% |  | 0.00% |  |  |
Loans Individually Evaluated for Impairment [Member] | Construction - Speculative [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 0 |  | $ 60 |  |  |
Loans receivable, gross | $ 6,983 |  | $ 9,159 |  |  |
Ratio | 0.00% |  | 0.70% |  |  |
Loans Individually Evaluated for Impairment [Member] | Construction - Custom [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 0 |  | $ 0 |  |  |
Loans receivable, gross | $ 0 |  | $ 360 |  |  |
Ratio | 0.00% |  | 0.00% |  |  |
Loans Individually Evaluated for Impairment [Member] | Land - Acquisition & Development [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 0 |  | $ 0 |  |  |
Loans receivable, gross | $ 3,237 |  | $ 3,833 |  |  |
Ratio | 0.00% |  | 0.00% |  |  |
Loans Individually Evaluated for Impairment [Member] | Land - Consumer Lot Loans [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 0 |  | $ 0 |  |  |
Loans receivable, gross | $ 11,044 |  | $ 12,939 |  |  |
Ratio | 0.00% |  | 0.00% |  |  |
Loans Individually Evaluated for Impairment [Member] | Multi-Family [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 0 |  | $ 0 |  |  |
Loans receivable, gross | $ 4,584 |  | $ 6,124 |  |  |
Ratio | 0.00% |  | 0.00% |  |  |
Loans Individually Evaluated for Impairment [Member] | Commercial Real Estate [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 0 |  | $ 0 |  |  |
Loans receivable, gross | $ 11,133 |  | $ 27,802 |  |  |
Ratio | 0.00% |  | 0.00% |  |  |
Loans Individually Evaluated for Impairment [Member] | Commercial & Industrial [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 0 |  | $ 0 |  |  |
Loans receivable, gross | $ 0 |  | $ 0 |  |  |
Ratio | 0.00% |  | 0.00% |  |  |
Loans Individually Evaluated for Impairment [Member] | HELOC [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 0 |  | $ 0 |  |  |
Loans receivable, gross | $ 1,633 |  | $ 1,650 |  |  |
Ratio | 0.00% |  | 0.00% |  |  |
Loans Individually Evaluated for Impairment [Member] | Consumer [Member] |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 0 |  | $ 0 |  |  |
Loans receivable, gross | $ 89 |  | $ 0 |  |  |
Ratio | 0.00% |  | 0.00% |  |  |

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition A valuation allowance for financing receivables that are expected to be uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLosses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522 + Details
Name: | us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Allowance as a Percentage of Outstanding Loans and Leases + References No definition available. + Details
Name: | wfsl_AllowanceAsPercentageOfOutstandingLoansAndLeases
Namespace Prefix: | wfsl_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ResidentialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=wfsl_ConstructionSpeculativeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=wfsl_ConstructionCustomMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=wfsl_LandAcquisitionAndDevelopmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=wfsl_LandConsumerLotLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=wfsl_MultiFamilyHousingPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=wfsl_CommercialAndIndustrialLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=wfsl_HomeEquityLineOfCreditMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=wfsl_LoansCollectivelyEvaluatedForImpairmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=wfsl_LoansIndividuallyEvaluatedForImpairmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |