XML 43 R33.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Allowance for Losses on Loans - Internally Assigned Grade (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Sep. 30, 2016
--- | --- | ---
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | $ 11,328,633 | $ 10,950,608
Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | $ 11,148,530 | $ 10,764,097
Total grade as a % of total net loans | 98.40% | 98.30%
Special mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | $ 27,007 | $ 32,485
Total grade as a % of total net loans | 0.20% | 0.30%
Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | $ 153,096 | $ 154,026
Total grade as a % of total net loans | 1.40% | 1.40%
Doubtful |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | $ 0 | $ 0
Total grade as a % of total net loans | 0.00% | 0.00%
Loss |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | $ 0 | $ 0
Total grade as a % of total net loans | 0.00% | 0.00%
Single-family residential |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | $ 5,624,263 | $ 5,658,830
Single-family residential | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 5,568,663 | 5,607,521
Single-family residential | Special mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 0 | 0
Single-family residential | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 55,600 | 51,309
Single-family residential | Doubtful |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 0 | 0
Single-family residential | Loss |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 0 | 0
Construction |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 1,265,747 | 1,110,411
Construction | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 1,256,396 | 1,098,549
Construction | Special mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 5,876 | 8,595
Construction | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 3,475 | 3,267
Construction | Doubtful |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 0 | 0
Construction | Loss |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 0 | 0
Construction - custom |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 494,447 | 473,069
Construction - custom | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 494,447 | 473,069
Construction - custom | Special mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 0 | 0
Construction - custom | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 0 | 0
Construction - custom | Doubtful |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 0 | 0
Construction - custom | Loss |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 0 | 0
Land - acquisition & development |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 119,085 | 118,497
Land - acquisition & development | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 113,569 | 111,225
Land - acquisition & development | Special mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 0 | 0
Land - acquisition & development | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 5,516 | 7,272
Land - acquisition & development | Doubtful |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 0 | 0
Land - acquisition & development | Loss |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 0 | 0
Land - consumer lot loans |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 101,104 | 104,567
Land - consumer lot loans | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 99,703 | 103,528
Land - consumer lot loans | Special mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 0 | 0
Land - consumer lot loans | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 1,401 | 1,039
Land - consumer lot loans | Doubtful |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 0 | 0
Land - consumer lot loans | Loss |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 0 | 0
Multi-family |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 1,217,594 | 1,124,290
Multi-family | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 1,211,055 | 1,117,437
Multi-family | Special mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 3,658 | 3,237
Multi-family | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 2,881 | 3,616
Multi-family | Doubtful |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 0 | 0
Multi-family | Loss |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 0 | 0
Commercial real estate |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 1,207,573 | 1,093,639
Commercial real estate | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 1,163,517 | 1,033,880
Commercial real estate | Special mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 6,660 | 13,446
Commercial real estate | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 37,396 | 46,313
Commercial real estate | Doubtful |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 0 | 0
Commercial real estate | Loss |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 0 | 0
Commercial & industrial |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 1,025,821 | 978,589
Commercial & industrial | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 969,186 | 930,776
Commercial & industrial | Special mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 10,813 | 7,207
Commercial & industrial | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 45,822 | 40,606
Commercial & industrial | Doubtful |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 0 | 0
Commercial & industrial | Loss |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 0 | 0
HELOC |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 148,452 | 149,716
HELOC | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 147,495 | 149,195
HELOC | Special mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 0 | 0
HELOC | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 957 | 521
HELOC | Doubtful |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 0 | 0
HELOC | Loss |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 0 | 0
Consumer |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 124,547 | 139,000
Consumer | Pass |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 124,499 | 138,917
Consumer | Special mention |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 0 | 0
Consumer | Substandard |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 48 | 83
Consumer | Doubtful |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | 0 | 0
Consumer | Loss |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans receivable, gross | $ 0 | $ 0

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_FinancingReceivableRecordedInvestmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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=65884687&loc=d3e4428-111522 + Details
Name: | us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Grade as Percentage of Total Gross Loans + References No definition available. + Details
Name: | wfsl_GradeAsPercentageOfTotalGrossLoans
Namespace Prefix: | wfsl_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_PassMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_SpecialMentionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_SubstandardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_DoubtfulMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=wfsl_LossMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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: |