XML 74 R54.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Allowance for Losses on Loans - Allowance for Losses on Loans (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2018 | Sep. 30, 2017
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |
Beginning Allowance | $ 123,073 | $ 113,494
Charge-offs | (5,932) | (2,700)
Recoveries | 16,982 | 17,007
Provision & Transfers | (4,866) | (4,728)
Ending Allowance | 129,257 | 123,073
Single-family residential |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |
Beginning Allowance | 36,892 | 37,796
Charge-offs | (1,142) | (1,229)
Recoveries | 757 | 653
Provision & Transfers | (3,474) | (328)
Ending Allowance | 33,033 | 36,892
Construction |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |
Beginning Allowance | 24,556 | 19,838
Charge-offs | 0 | 0
Recoveries | 0 | 0
Provision & Transfers | 6,761 | 4,718
Ending Allowance | 31,317 | 24,556
Construction - custom |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |
Beginning Allowance | 1,944 | 1,080
Charge-offs | (50) | (16)
Recoveries | 0 | 0
Provision & Transfers | (52) | 880
Ending Allowance | 1,842 | 1,944
Land - acquisition & development |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |
Beginning Allowance | 6,829 | 6,023
Charge-offs | (13) | (280)
Recoveries | 14,223 | 11,038
Provision & Transfers | (13,061) | (9,952)
Ending Allowance | 7,978 | 6,829
Land - consumer lot loans |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |
Beginning Allowance | 2,649 | 2,535
Charge-offs | (67) | (17)
Recoveries | 35 | 481
Provision & Transfers | (453) | (350)
Ending Allowance | 2,164 | 2,649
Multi-family |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |
Beginning Allowance | 7,862 | 6,925
Charge-offs | 0 | 0
Recoveries | 0 | 0
Provision & Transfers | 467 | 937
Ending Allowance | 8,329 | 7,862
Commercial real estate |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |
Beginning Allowance | 11,818 | 8,588
Charge-offs | (36) | (11)
Recoveries | 189 | 1,684
Provision & Transfers | (119) | 1,557
Ending Allowance | 11,852 | 11,818
Commercial & industrial |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |
Beginning Allowance | 28,524 | 28,008
Charge-offs | (3,574) | (173)
Recoveries | 714 | 1,833
Provision & Transfers | 3,038 | (1,144)
Ending Allowance | 28,702 | 28,524
HELOC |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |
Beginning Allowance | 855 | 813
Charge-offs | (668) | (90)
Recoveries | 71 | 21
Provision & Transfers | 523 | 111
Ending Allowance | 781 | 855
Consumer |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |
Beginning Allowance | 1,144 | 1,888
Charge-offs | (382) | (884)
Recoveries | 993 | 1,297
Provision & Transfers | 1,504 | (1,157)
Ending Allowance | $ 3,259 | $ 1,144

X
- Definition A valuation allowance for financing receivables that are expected to be uncollectible. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84173941&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 of recovery of financing receivables doubtful of collection that were previously charged off. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of direct write-downs of financing receivables charged against the allowance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Financing Receivable, Allowance for Credit Losses, Provision and Transfers + References No definition available. + Details
Name: | wfsl_FinancingReceivableAllowanceForCreditLossesProvisionAndTransfers
Namespace Prefix: | wfsl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConstructionLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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

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

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=wfsl_CommercialandIndustrialMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_HomeEquityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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