XML 72 R51.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Loans Receivable - Loans Receivable, Analysis of Age of Loans in Past Due Status (Details) - USD ($) $ in Thousands | Sep. 30, 2016 | Sep. 30, 2015
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amount of loans, net of LIPs & charge-offs | $ 10,071,124 |
Financing receivable, recorded investment, current | 10,002,844 |
Financing receivable, recorded investment, past due | $ 68,280 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 0.68% | 0.88%
Ratio of past due to total loans, net of charge-offs and LIPs, current | 99.32% |
Ratio of past due to total loans, net of charge-offs and LIPs, past due | 0.68% |
Financing Receivables, 1 to 29 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | $ 25,007 |
Ratio of past due to total loans, net of charge-offs and LIPs, past due | 0.25% |
Financing Receivables, 30 to 59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | $ 7,014 |
Ratio of past due to total loans, net of charge-offs and LIPs, past due | 0.07% |
Financing Receivables, 60 to 89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | $ 36,259 |
Ratio of past due to total loans, net of charge-offs and LIPs, past due | 0.36% |
Non-acquired loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amount of loans, net of LIPs & charge-offs | $ 9,836,919 |
Financing receivable, recorded investment, current | 9,780,558 |
Financing receivable, recorded investment, past due | $ 56,361 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 0.57% |
Non-acquired loans | Single-family residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amount of loans, net of LIPs & charge-offs | $ 5,624,783 |
Financing receivable, recorded investment, current | 5,574,384 |
Financing receivable, recorded investment, past due | $ 50,399 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 0.90% |
Non-acquired loans | Construction - speculative |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amount of loans, net of LIPs & charge-offs | $ 497,393 |
Financing receivable, recorded investment, current | 497,393 |
Financing receivable, recorded investment, past due | $ 0 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 0.00% |
Non-acquired loans | Construction - custom |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amount of loans, net of LIPs & charge-offs | $ 229,957 |
Financing receivable, recorded investment, current | 229,419 |
Financing receivable, recorded investment, past due | $ 538 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 0.23% |
Non-acquired loans | Land - acquisition & development |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amount of loans, net of LIPs & charge-offs | $ 88,662 |
Financing receivable, recorded investment, current | 88,662 |
Financing receivable, recorded investment, past due | $ 0 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 0.00% |
Non-acquired loans | Land - consumer lot loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amount of loans, net of LIPs & charge-offs | $ 102,386 |
Financing receivable, recorded investment, current | 100,373 |
Financing receivable, recorded investment, past due | $ 2,013 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 1.97% |
Non-acquired loans | Multi-family |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amount of loans, net of LIPs & charge-offs | $ 1,119,042 |
Financing receivable, recorded investment, current | 1,117,453 |
Financing receivable, recorded investment, past due | $ 1,589 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 0.14% |
Non-acquired loans | Commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amount of loans, net of LIPs & charge-offs | $ 955,944 |
Financing receivable, recorded investment, current | 955,604 |
Financing receivable, recorded investment, past due | $ 340 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 0.04% |
Non-acquired loans | Commercial and Industrial Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amount of loans, net of LIPs & charge-offs | $ 947,703 |
Financing receivable, recorded investment, current | 947,661 |
Financing receivable, recorded investment, past due | $ 42 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 0.00% |
Non-acquired loans | HELOC |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amount of loans, net of LIPs & charge-offs | $ 134,214 |
Financing receivable, recorded investment, current | 133,683 |
Financing receivable, recorded investment, past due | $ 531 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 0.40% |
Non-acquired loans | Consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amount of loans, net of LIPs & charge-offs | $ 136,835 |
Financing receivable, recorded investment, current | 135,926 |
Financing receivable, recorded investment, past due | $ 909 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 0.66% |
Non-acquired loans | Financing Receivables, 1 to 29 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | $ 24,656 |
Non-acquired loans | Financing Receivables, 1 to 29 Days Past Due | Single-family residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 20,917 |
Non-acquired loans | Financing Receivables, 1 to 29 Days Past Due | Construction - speculative |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 0 |
Non-acquired loans | Financing Receivables, 1 to 29 Days Past Due | Construction - custom |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 538 |
Non-acquired loans | Financing Receivables, 1 to 29 Days Past Due | Land - acquisition & development |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 0 |
Non-acquired loans | Financing Receivables, 1 to 29 Days Past Due | Land - consumer lot loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 816 |
Non-acquired loans | Financing Receivables, 1 to 29 Days Past Due | Multi-family |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 1,190 |
Non-acquired loans | Financing Receivables, 1 to 29 Days Past Due | Commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 0 |
Non-acquired loans | Financing Receivables, 1 to 29 Days Past Due | Commercial and Industrial Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 0 |
Non-acquired loans | Financing Receivables, 1 to 29 Days Past Due | HELOC |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 490 |
Non-acquired loans | Financing Receivables, 1 to 29 Days Past Due | Consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 705 |
Non-acquired loans | Financing Receivables, 30 to 59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 6,608 |
Non-acquired loans | Financing Receivables, 30 to 59 Days Past Due | Single-family residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 5,173 |
Non-acquired loans | Financing Receivables, 30 to 59 Days Past Due | Construction - speculative |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 0 |
Non-acquired loans | Financing Receivables, 30 to 59 Days Past Due | Construction - custom |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 0 |
Non-acquired loans | Financing Receivables, 30 to 59 Days Past Due | Land - acquisition & development |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 0 |
Non-acquired loans | Financing Receivables, 30 to 59 Days Past Due | Land - consumer lot loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 687 |
Non-acquired loans | Financing Receivables, 30 to 59 Days Past Due | Multi-family |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 399 |
Non-acquired loans | Financing Receivables, 30 to 59 Days Past Due | Commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 183 |
Non-acquired loans | Financing Receivables, 30 to 59 Days Past Due | Commercial and Industrial Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 42 |
Non-acquired loans | Financing Receivables, 30 to 59 Days Past Due | HELOC |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 0 |
Non-acquired loans | Financing Receivables, 30 to 59 Days Past Due | Consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 124 |
Non-acquired loans | Financing Receivables, 60 to 89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 25,097 |
Non-acquired loans | Financing Receivables, 60 to 89 Days Past Due | Single-family residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 24,309 |
Non-acquired loans | Financing Receivables, 60 to 89 Days Past Due | Construction - speculative |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 0 |
Non-acquired loans | Financing Receivables, 60 to 89 Days Past Due | Construction - custom |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 0 |
Non-acquired loans | Financing Receivables, 60 to 89 Days Past Due | Land - acquisition & development |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 0 |
Non-acquired loans | Financing Receivables, 60 to 89 Days Past Due | Land - consumer lot loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 510 |
Non-acquired loans | Financing Receivables, 60 to 89 Days Past Due | Multi-family |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 0 |
Non-acquired loans | Financing Receivables, 60 to 89 Days Past Due | Commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 157 |
Non-acquired loans | Financing Receivables, 60 to 89 Days Past Due | Commercial and Industrial Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 0 |
Non-acquired loans | Financing Receivables, 60 to 89 Days Past Due | HELOC |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 41 |
Non-acquired loans | Financing Receivables, 60 to 89 Days Past Due | Consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 80 |
Acquired loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amount of loans, net of LIPs & charge-offs | 115,394 |
Financing receivable, recorded investment, current | 114,770 |
Financing receivable, recorded investment, past due | $ 624 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 0.54% |
Acquired loans | Financing Receivables, 1 to 29 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | $ 124 |
Acquired loans | Financing Receivables, 30 to 59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 2 |
Acquired loans | Financing Receivables, 60 to 89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 498 |
Credit-impaired acquired loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amount of loans, net of LIPs & charge-offs | 89,837 |
Financing receivable, recorded investment, current | 84,625 |
Financing receivable, recorded investment, past due | $ 5,212 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 5.80% |
Credit-impaired acquired loans | Financing Receivables, 1 to 29 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | $ 227 |
Credit-impaired acquired loans | Financing Receivables, 30 to 59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 142 |
Credit-impaired acquired loans | Financing Receivables, 60 to 89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 4,843 |
Covered Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Amount of loans, net of LIPs & charge-offs | 28,974 |
Financing receivable, recorded investment, current | 22,891 |
Financing receivable, recorded investment, past due | $ 6,083 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 20.99% |
Covered Loans | Financing Receivables, 1 to 29 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | $ 0 |
Covered Loans | Financing Receivables, 30 to 59 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | 262 |
Covered Loans | Financing Receivables, 60 to 89 Days Past Due |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Financing receivable, recorded investment, past due | $ 5,821 |

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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=66008989&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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Recorded Investment -URI http://asc.fasb.org/extlink&oid=65880944 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=66008989&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_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: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=wfsl_NonAcquiredLoansMember
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=wfsl_ConstructionSpeculativeMember
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_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=wfsl_AcquiredLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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