XML 72 R52.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Loans Receivable - Breakdown of Delinquent Loans (Details) - USD ($) $ in Thousands | Sep. 30, 2018 | Sep. 30, 2017
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amount of Loans Net of Loans in Process | $ 11,658,172 | $ 11,051,453
Current | 11,608,959 | 11,007,440
Total Delinquent | $ 49,213 | $ 44,013
Ratio of total past due loans to total loans | 0.42% | 0.40%
Delinquency %, Current | 99.58% | 99.60%
Delinquency %, Past Due | 0.42% | 0.40%
Single-family residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amount of Loans Net of Loans in Process | $ 5,798,353 | $ 5,709,690
Current | 5,768,253 | 5,671,933
Total Delinquent | $ 30,100 | $ 37,757
Ratio of total past due loans to total loans | 0.52% | 0.66%
Construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amount of Loans Net of Loans in Process | $ 1,062,855 | $ 793,959
Current | 1,060,428 | 793,959
Total Delinquent | $ 2,427 | $ 0
Ratio of total past due loans to total loans | 0.23% | 0.00%
Construction - custom |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amount of Loans Net of Loans in Process | $ 289,192 | $ 277,599
Current | 289,192 | 277,508
Total Delinquent | $ 0 | $ 91
Ratio of total past due loans to total loans | 0.00% | 0.03%
Land - acquisition & development |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amount of Loans Net of Loans in Process | $ 123,560 | $ 104,856
Current | 122,620 | 104,526
Total Delinquent | $ 940 | $ 330
Ratio of total past due loans to total loans | 0.76% | 0.31%
Land - consumer lot loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amount of Loans Net of Loans in Process | $ 101,908 | $ 104,335
Current | 101,294 | 103,389
Total Delinquent | $ 614 | $ 946
Ratio of total past due loans to total loans | 0.60% | 0.91%
Multi-family |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amount of Loans Net of Loans in Process | $ 1,385,103 | $ 1,303,119
Current | 1,385,103 | 1,302,720
Total Delinquent | $ 0 | $ 399
Ratio of total past due loans to total loans | 0.00% | 0.03%
Commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amount of Loans Net of Loans in Process | $ 1,452,169 | $ 1,434,610
Current | 1,448,946 | 1,432,052
Total Delinquent | $ 3,223 | $ 2,558
Ratio of total past due loans to total loans | 0.22% | 0.18%
Commercial & industrial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amount of Loans Net of Loans in Process | $ 1,140,874 | $ 1,093,360
Current | 1,130,836 | 1,092,735
Total Delinquent | $ 10,038 | $ 625
Ratio of total past due loans to total loans | 0.88% | 0.06%
HELOC |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amount of Loans Net of Loans in Process | $ 130,852 | $ 144,850
Current | 129,510 | 143,974
Total Delinquent | $ 1,342 | $ 876
Ratio of total past due loans to total loans | 1.03% | 0.60%
Consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amount of Loans Net of Loans in Process | $ 173,306 | $ 85,075
Current | 172,777 | 84,644
Total Delinquent | $ 529 | $ 431
Ratio of total past due loans to total loans | 0.31% | 0.51%
30 Days Delinquent |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Delinquent | $ 9,182 | $ 12,015
Delinquency %, Past Due | 0.08% | 0.11%
30 Days Delinquent | Single-family residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Delinquent | $ 7,983 | $ 10,925
30 Days Delinquent | Construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Delinquent | 0 | 0
30 Days Delinquent | Construction - custom |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Delinquent | 0 | 0
30 Days Delinquent | Land - acquisition & development |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Delinquent | 0 | 0
30 Days Delinquent | Land - consumer lot loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Delinquent | 144 | 112
30 Days Delinquent | Multi-family |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Delinquent | 0 | 5
30 Days Delinquent | Commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Delinquent | 316 | 507
30 Days Delinquent | Commercial & industrial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Delinquent | 0 | 0
30 Days Delinquent | HELOC |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Delinquent | 567 | 221
30 Days Delinquent | Consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Delinquent | 172 | 245
60 Days Delinquent |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Delinquent | $ 6,513 | $ 6,245
Delinquency %, Past Due | 0.06% | 0.06%
60 Days Delinquent | Single-family residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Delinquent | $ 3,562 | $ 4,810
60 Days Delinquent | Construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Delinquent | 0 | 0
60 Days Delinquent | Construction - custom |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Delinquent | 0 | 0
60 Days Delinquent | Land - acquisition & development |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Delinquent | 270 | 0
60 Days Delinquent | Land - consumer lot loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Delinquent | 117 | 680
60 Days Delinquent | Multi-family |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Delinquent | 0 | 255
60 Days Delinquent | Commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Delinquent | 1,767 | 0
60 Days Delinquent | Commercial & industrial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Delinquent | 0 | 51
60 Days Delinquent | HELOC |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Delinquent | 469 | 342
60 Days Delinquent | Consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Delinquent | 328 | 107
90 Days Delinquent |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Delinquent | $ 33,518 | $ 25,753
Delinquency %, Past Due | 0.29% | 0.23%
90 Days Delinquent | Single-family residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Delinquent | $ 18,555 | $ 22,022
90 Days Delinquent | Construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Delinquent | 2,427 | 0
90 Days Delinquent | Construction - custom |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Delinquent | 0 | 91
90 Days Delinquent | Land - acquisition & development |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Delinquent | 670 | 330
90 Days Delinquent | Land - consumer lot loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Delinquent | 353 | 154
90 Days Delinquent | Multi-family |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Delinquent | 0 | 139
90 Days Delinquent | Commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Delinquent | 1,140 | 2,051
90 Days Delinquent | Commercial & industrial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Delinquent | 10,038 | 574
90 Days Delinquent | HELOC |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Delinquent | 306 | 313
90 Days Delinquent | Consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Delinquent | $ 29 | $ 79

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 Financing receivables that are current. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953401-111524 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Recorded Investment in financing receivables that are past due at the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953401-111524 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentPastDue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Financing Receivable, Ratio of Total Past Due Loans to Total Loans Receivable, Net of Charge Offs and Loans in Process, Current + References No definition available. + Details
Name: | wfsl_FinancingReceivableRatioofTotalPastDueLoanstoTotalLoansReceivableNetofChargeOffsandLoansinProcessCurrent
Namespace Prefix: | wfsl_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Financing Receivable, Ratio of Total Past Due Loans to Total Loans Receivable, Net of Charge Offs and Loans in Process, Past Due + References No definition available. + Details
Name: | wfsl_FinancingReceivableRatioofTotalPastDueLoanstoTotalLoansReceivableNetofChargeOffsandLoansinProcessPastDue
Namespace Prefix: | wfsl_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Loans and Leases Receivable, Ratio of Total Past Due Loans to Total Loans Receivable, Net of Charge Offs and Loans in Process + References No definition available. + Details
Name: | wfsl_LoansAndLeasesReceivableRatioOfTotalPastDueLoansToTotalLoansReceivableNetOfChargeOffsAndLoansInProcess
Namespace Prefix: | wfsl_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Loans Receivable, Net of Charge Offs and Loans in Process + References No definition available. + Details
Name: | wfsl_LoansReceivableNetofChargeOffsandLoansinProcess
Namespace Prefix: | wfsl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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_CommercialAndIndustrialLoansMember
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: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivables1To29DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivables30To59DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivables60To89DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |