XML 43 R32.htm IDEA: XBRL DOCUMENT
v3.4.0.3

Allowance for Losses on Loans - Loans Evaluated for Impairment (Details) - USD ($) $ in Thousands | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014
--- | --- | --- | --- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 109,919 | $ 107,901 | $ 106,829 | $ 108,323 | $ 108,700 | $ 114,591
Loans receivable, gross | 10,306,673 |  | 9,823,270 |  |  |
Single-family residential |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | 41,828 | 47,756 | 47,347 | 54,762 | 55,495 | 62,763
Construction |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | 15,726 | 7,014 | 6,680 | 5,445 | 5,451 | 6,742
Construction - custom |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | 1,022 | 1,062 | 990 | 968 | 965 | 1,695
Land - acquisition & development |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | 7,252 | 6,778 | 5,781 | 7,405 | 6,671 | 5,592
Land - consumer lot loans |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | 2,466 | 3,001 | 2,946 | 3,035 | 3,113 | 3,077
Multi-family |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | 6,784 | 5,047 | 5,304 | 4,673 | 4,500 | 4,248
Commercial real estate |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | 7,783 | 10,344 | 8,960 | 6,734 | 5,872 | 7,548
Commercial & industrial |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | 23,824 | 24,096 | 24,980 | 21,146 | 23,328 | 16,527
HELOC |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | 828 | 820 | 902 | 850 | 892 | 928
Consumer |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | 2,406 | $ 1,983 | 2,939 | $ 3,305 | $ 2,413 | $ 3,227
Loans Collectively Evaluated for Impairment |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | 108,883 |  | 106,554 |  |  |
Loans receivable, gross | $ 9,340,515 |  | $ 8,963,453 |  |  |
Ratio | 1.20% |  | 1.20% |  |  |
Loans Collectively Evaluated for Impairment | Single-family residential |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 40,974 |  | $ 47,073 |  |  |
Loans receivable, gross | $ 5,557,463 |  | $ 5,595,752 |  |  |
Ratio | 0.70% |  | 0.80% |  |  |
Loans Collectively Evaluated for Impairment | Construction |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 15,726 |  | $ 6,680 |  |  |
Loans receivable, gross | $ 391,616 |  | $ 124,679 |  |  |
Ratio | 4.00% |  | 5.40% |  |  |
Loans Collectively Evaluated for Impairment | Construction - custom |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 1,021 |  | $ 990 |  |  |
Loans receivable, gross | $ 210,809 |  | $ 205,692 |  |  |
Ratio | 0.50% |  | 0.50% |  |  |
Loans Collectively Evaluated for Impairment | Land - acquisition & development |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 7,221 |  | $ 5,781 |  |  |
Loans receivable, gross | $ 88,064 |  | $ 72,602 |  |  |
Ratio | 8.20% |  | 8.00% |  |  |
Loans Collectively Evaluated for Impairment | Land - consumer lot loans |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 2,466 |  | $ 2,946 |  |  |
Loans receivable, gross | $ 89,741 |  | $ 93,103 |  |  |
Ratio | 2.80% |  | 3.20% |  |  |
Loans Collectively Evaluated for Impairment | Multi-family |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 6,774 |  | $ 5,304 |  |  |
Loans receivable, gross | $ 1,070,178 |  | $ 1,062,194 |  |  |
Ratio | 0.60% |  | 0.50% |  |  |
Loans Collectively Evaluated for Impairment | Commercial real estate |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 7,643 |  | $ 8,960 |  |  |
Loans receivable, gross | $ 810,343 |  | $ 844,691 |  |  |
Ratio | 0.90% |  | 1.10% |  |  |
Loans Collectively Evaluated for Impairment | Commercial & industrial |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 23,824 |  | $ 24,980 |  |  |
Loans receivable, gross | $ 829,394 |  | $ 643,577 |  |  |
Ratio | 2.90% |  | 3.90% |  |  |
Loans Collectively Evaluated for Impairment | HELOC |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 828 |  | $ 902 |  |  |
Loans receivable, gross | $ 128,295 |  | $ 126,594 |  |  |
Ratio | 0.70% |  | 0.70% |  |  |
Loans Collectively Evaluated for Impairment | Consumer |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 2,406 |  | $ 2,938 |  |  |
Loans receivable, gross | $ 164,612 |  | $ 194,569 |  |  |
Ratio | 1.50% |  | 1.50% |  |  |
Loans Individually Evaluated for Impairment |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 1,036 |  | $ 275 |  |  |
Loans receivable, gross | $ 45,717 |  | $ 85,513 |  |  |
Ratio | 2.30% |  | 0.30% |  |  |
Loans Individually Evaluated for Impairment | Single-family residential |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 854 |  | $ 275 |  |  |
Loans receivable, gross | $ 28,462 |  | $ 51,718 |  |  |
Ratio | 3.00% |  | 0.50% |  |  |
Loans Individually Evaluated for Impairment | Construction |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 0 |  | $ 0 |  |  |
Loans receivable, gross | $ 0 |  | $ 5,441 |  |  |
Ratio | 0.00% |  | 0.00% |  |  |
Loans Individually Evaluated for Impairment | Construction - custom |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 0 |  | $ 0 |  |  |
Loans receivable, gross | $ 171 |  | $ 0 |  |  |
Ratio | 0.00% |  | 0.00% |  |  |
Loans Individually Evaluated for Impairment | Land - acquisition & development |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 31 |  | $ 0 |  |  |
Loans receivable, gross | $ 1,280 |  | $ 2,198 |  |  |
Ratio | 2.40% |  | 0.00% |  |  |
Loans Individually Evaluated for Impairment | Land - consumer lot loans |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 0 |  | $ 0 |  |  |
Loans receivable, gross | $ 1,114 |  | $ 10,824 |  |  |
Ratio | 0.00% |  | 0.00% |  |  |
Loans Individually Evaluated for Impairment | Multi-family |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 11 |  | $ 0 |  |  |
Loans receivable, gross | $ 1,522 |  | $ 5,348 |  |  |
Ratio | 0.70% |  | 0.00% |  |  |
Loans Individually Evaluated for Impairment | Commercial real estate |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 140 |  | $ 0 |  |  |
Loans receivable, gross | $ 12,602 |  | $ 8,826 |  |  |
Ratio | 1.10% |  | 0.00% |  |  |
Loans Individually Evaluated for Impairment | Commercial & industrial |  |  |  |  |  |
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 | HELOC |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 0 |  | $ 0 |  |  |
Loans receivable, gross | $ 566 |  | $ 1,072 |  |  |
Ratio | 0.00% |  | 0.00% |  |  |
Loans Individually Evaluated for Impairment | Consumer |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |
Allowance for probable losses | $ 0 |  | $ 0 |  |  |
Loans receivable, gross | $ 0 |  | $ 86 |  |  |
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=us-gaap_ConstructionLoansMember
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_CommercialandIndustrialMember
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: |