XML 35 R25.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Loans Receivable - Loans Receivable, Analysis of Age of Loans in Past Due Status (Details) - USD ($) $ in Thousands | Dec. 31, 2015 | Sep. 30, 2015 | Dec. 31, 2014
--- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of loans, net of charge-offs and LIP | $ 9,574,334 | $ 9,346,474 |
Current | 9,480,363 | 9,263,876 |
Past due | $ 93,969 | $ 82,598 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 0.98% | 0.88% | 1.47%
Ratio of total past due loans to total loans receivable, current | 99.02% | 99.12% |
Ratio of total past due loans to total loans receivable, past due | 0.98% | 0.88% |
Financing Receivables, 1 to 29 Days Past Due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | $ 25,793 | $ 21,212 |
Ratio of total past due loans to total loans receivable, past due | 0.27% | 0.23% |
Financing Receivables, 30 to 59 Days Past Due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | $ 13,767 | $ 9,198 |
Ratio of total past due loans to total loans receivable, past due | 0.14% | 0.10% |
Financing Receivables, 60 to 89 Days Past Due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | $ 54,412 | $ 52,188 |
Ratio of total past due loans to total loans receivable, past due | 0.57% | 0.56% |
Non-Acquired loans |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of loans, net of charge-offs and LIP | $ 9,339,695 | $ 9,073,176 |
Current | 9,250,358 | 8,997,648 |
Past due | $ 89,335 | $ 75,528 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 0.96% | 0.83% |
Non-Acquired loans | Single-family residential |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of loans, net of charge-offs and LIP | $ 5,644,009 | $ 5,655,928 |
Current | 5,576,774 | 5,590,673 |
Past due | $ 67,234 | $ 65,255 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 1.19% | 1.15% |
Non-Acquired loans | Construction |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of loans, net of charge-offs and LIP | $ 325,485 | $ 130,121 |
Current | 324,619 | 130,121 |
Past due | $ 866 | $ 0 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 0.27% | 0.00% |
Non-Acquired loans | Construction - custom |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of loans, net of charge-offs and LIP | $ 221,327 | $ 205,692 |
Current | 218,773 | 204,168 |
Past due | $ 2,554 | $ 1,524 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 1.15% | 0.74% |
Non-Acquired loans | Land - acquisition & development |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of loans, net of charge-offs and LIP | $ 85,830 | $ 75,661 |
Current | 84,805 | 74,737 |
Past due | $ 1,025 | $ 924 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 1.19% | 1.22% |
Non-Acquired loans | Land - consumer lot loans |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of loans, net of charge-offs and LIP | $ 102,887 | $ 104,494 |
Current | 100,224 | 102,045 |
Past due | $ 2,663 | $ 2,449 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 2.59% | 2.34% |
Non-Acquired loans | Multi-family |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of loans, net of charge-offs and LIP | $ 966,921 | $ 1,068,038 |
Current | 965,110 | 1,065,667 |
Past due | $ 1,811 | $ 2,371 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 0.19% | 0.22% |
Non-Acquired loans | Commercial real estate |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of loans, net of charge-offs and LIP | $ 929,495 | $ 893,072 |
Current | 920,582 | 892,180 |
Past due | $ 8,913 | $ 892 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 0.96% | 0.10% |
Non-Acquired loans | Commercial & industrial |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of loans, net of charge-offs and LIP | $ 756,831 | $ 617,545 |
Current | 754,611 | 616,602 |
Past due | $ 2,220 | $ 943 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 0.29% | 0.15% |
Non-Acquired loans | HELOC |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of loans, net of charge-offs and LIP | $ 125,479 | $ 127,648 |
Current | 124,883 | 127,196 |
Past due | $ 595 | $ 452 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 0.47% | 0.35% |
Non-Acquired loans | Consumer |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of loans, net of charge-offs and LIP | $ 181,431 | $ 194,977 |
Current | 179,977 | 194,259 |
Past due | $ 1,454 | $ 718 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 0.80% | 0.37% |
Non-Acquired loans | Financing Receivables, 1 to 29 Days Past Due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | $ 24,245 | $ 20,341 |
Non-Acquired loans | Financing Receivables, 1 to 29 Days Past Due | Single-family residential |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 17,285 | 17,305 |
Non-Acquired loans | Financing Receivables, 1 to 29 Days Past Due | Construction |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 560 | 0 |
Non-Acquired loans | Financing Receivables, 1 to 29 Days Past Due | Construction - custom |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 28 | 791 |
Non-Acquired loans | Financing Receivables, 1 to 29 Days Past Due | Land - acquisition & development |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 387 | 406 |
Non-Acquired loans | Financing Receivables, 1 to 29 Days Past Due | Land - consumer lot loans |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 828 | 689 |
Non-Acquired loans | Financing Receivables, 1 to 29 Days Past Due | Multi-family |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 1,196 | 259 |
Non-Acquired loans | Financing Receivables, 1 to 29 Days Past Due | Commercial real estate |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 841 | 131 |
Non-Acquired loans | Financing Receivables, 1 to 29 Days Past Due | Commercial & industrial |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 2,219 | 93 |
Non-Acquired loans | Financing Receivables, 1 to 29 Days Past Due | HELOC |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 19 | 174 |
Non-Acquired loans | Financing Receivables, 1 to 29 Days Past Due | Consumer |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 882 | 493 |
Non-Acquired loans | Financing Receivables, 30 to 59 Days Past Due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 13,456 | 9,104 |
Non-Acquired loans | Financing Receivables, 30 to 59 Days Past Due | Single-family residential |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 9,939 | 7,757 |
Non-Acquired loans | Financing Receivables, 30 to 59 Days Past Due | Construction |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 306 | 0 |
Non-Acquired loans | Financing Receivables, 30 to 59 Days Past Due | Construction - custom |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 9 | 270 |
Non-Acquired loans | Financing Receivables, 30 to 59 Days Past Due | Land - acquisition & development |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 0 | 0 |
Non-Acquired loans | Financing Receivables, 30 to 59 Days Past Due | Land - consumer lot loans |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 897 | 399 |
Non-Acquired loans | Financing Receivables, 30 to 59 Days Past Due | Multi-family |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 0 | 454 |
Non-Acquired loans | Financing Receivables, 30 to 59 Days Past Due | Commercial real estate |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 1,933 | 0 |
Non-Acquired loans | Financing Receivables, 30 to 59 Days Past Due | Commercial & industrial |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 1 | 27 |
Non-Acquired loans | Financing Receivables, 30 to 59 Days Past Due | HELOC |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 19 | 27 |
Non-Acquired loans | Financing Receivables, 30 to 59 Days Past Due | Consumer |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 352 | 170 |
Non-Acquired loans | Financing Receivables, 60 to 89 Days Past Due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 51,637 | 46,083 |
Non-Acquired loans | Financing Receivables, 60 to 89 Days Past Due | Single-family residential |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 40,010 | 40,193 |
Non-Acquired loans | Financing Receivables, 60 to 89 Days Past Due | Construction |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 0 | 0 |
Non-Acquired loans | Financing Receivables, 60 to 89 Days Past Due | Construction - custom |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 2,518 | 463 |
Non-Acquired loans | Financing Receivables, 60 to 89 Days Past Due | Land - acquisition & development |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 638 | 518 |
Non-Acquired loans | Financing Receivables, 60 to 89 Days Past Due | Land - consumer lot loans |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 938 | 1,361 |
Non-Acquired loans | Financing Receivables, 60 to 89 Days Past Due | Multi-family |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 615 | 1,658 |
Non-Acquired loans | Financing Receivables, 60 to 89 Days Past Due | Commercial real estate |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 6,139 | 761 |
Non-Acquired loans | Financing Receivables, 60 to 89 Days Past Due | Commercial & industrial |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 0 | 823 |
Non-Acquired loans | Financing Receivables, 60 to 89 Days Past Due | HELOC |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 558 | 251 |
Non-Acquired loans | Financing Receivables, 60 to 89 Days Past Due | Consumer |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 221 | 55 |
Acquired loans |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of loans, net of charge-offs and LIP | 140,995 | 57,682 |
Current | 140,137 | 56,559 |
Past due | $ 858 | $ 1,123 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 0.61% | 1.95% |
Acquired loans | Financing Receivables, 1 to 29 Days Past Due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | $ 193 | $ 356 |
Acquired loans | Financing Receivables, 30 to 59 Days Past Due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 16 | 0 |
Acquired loans | Financing Receivables, 60 to 89 Days Past Due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 649 | 767 |
Credit impaired acquired loans |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of loans, net of charge-offs and LIP | 55,060 | 139,726 |
Current | 52,806 | 138,940 |
Past due | $ 2,254 | $ 786 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 4.09% | 0.56% |
Credit impaired acquired loans | Financing Receivables, 1 to 29 Days Past Due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | $ 854 | $ 243 |
Credit impaired acquired loans | Financing Receivables, 30 to 59 Days Past Due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 0 | 4 |
Credit impaired acquired loans | Financing Receivables, 60 to 89 Days Past Due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 1,400 | 539 |
Covered loans |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Amount of loans, net of charge-offs and LIP | 38,584 | 75,890 |
Current | 37,062 | 70,729 |
Past due | $ 1,522 | $ 5,161 |
Ratio of past due loans to total loans, net of charge-offs and LIPs | 3.94% | 6.80% |
Covered loans | Financing Receivables, 1 to 29 Days Past Due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | $ 501 | $ 272 |
Covered loans | Financing Receivables, 30 to 59 Days Past Due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | 295 | 90 |
Covered loans | Financing Receivables, 60 to 89 Days Past Due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Past due | $ 726 | $ 4,799 |

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=49124121&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 -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=49124121&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_BusinessAcquisitionAxis=wfsl_NonAcquiredLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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_BusinessAcquisitionAxis=wfsl_AcquiredLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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