XML 89 R74.htm IDEA: XBRL DOCUMENT
v3.19.1

LOANS AND ALLOWANCE FOR LOAN LOSSES - Schedule of Impaired Loans That Are TDRs (Detail) $ in Thousands | Dec. 31, 2018 USD ($) contract | Dec. 31, 2017 USD ($) contract
--- | --- | ---
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract | 22 | 23
Recorded Investment | $ | $ 1,827 | $ 1,958
Accruing |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract | 13 | 13
Recorded Investment | $ | $ 1,132 | $ 1,183
Accruing | Commercial Real Estate | Owner-occupied |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract | 1 | 1
Recorded Investment | $ | $ 39 | $ 52
Accruing | Residential mortgage | First lien |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract | 11 | 11
Recorded Investment | $ | $ 1,069 | $ 1,102
Accruing | Residential mortgage | Home equity - lines of credit |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract | 1 | 1
Recorded Investment | $ | $ 24 | $ 29
Nonaccruing |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract | 9 | 10
Recorded Investment | $ | $ 695 | $ 775
Nonaccruing | Commercial Real Estate | Owner-occupied |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract | 1 | 1
Recorded Investment | $ | $ 37 | $ 57
Nonaccruing | Residential mortgage | First lien |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract | 8 | 8
Recorded Investment | $ | $ 658 | $ 715
Nonaccruing | Installment and other loans |  |
Financing Receivable, Modifications [Line Items] |  |
Number of Contracts | contract | 0 | 1
Recorded Investment | $ | $ 0 | $ 3

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

X
- Definition The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=82895541&loc=d3e18845-111554 + Details
Name: | us-gaap_FinancingReceivableModificationsRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Financing Receivable Modified Balance End Of Period Number Of Contract + References No definition available. + Details
Name: | wk_FinancingReceivableModifiedBalanceEndOfPeriodNumberOfContract
Namespace Prefix: | wk_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=wk_AccruingMember
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_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=wk_OwnerOccupiedMember
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_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=wk_FirstLienMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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