XML 88 R73.htm IDEA: XBRL DOCUMENT
v3.19.1

LOANS AND ALLOWANCE FOR LOAN LOSSES - Summary of Average Recorded Investment in Impaired Loans and Related Interest Income (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Financing Receivable, Impaired [Line Items] |  |  |
Average Impaired Balance | $ 8,249 | $ 7,130 | $ 15,118
Interest Income Recognized | 63 | 66 | 33
Commercial Real Estate | Owner-occupied |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Impaired Balance | 1,495 | 1,000 | 1,758
Interest Income Recognized | 2 | 6 | 0
Commercial Real Estate | Non-owner occupied |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Impaired Balance | 1,842 | 392 | 6,831
Interest Income Recognized | 0 | 0 | 0
Commercial Real Estate | Multi-family |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Impaired Balance | 148 | 182 | 216
Interest Income Recognized | 0 | 0 | 0
Commercial Real Estate | Non-owner occupied residential |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Impaired Balance | 346 | 418 | 645
Interest Income Recognized | 0 | 0 | 0
Acquisition and development | 1-4 family residential construction |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Impaired Balance | 181 | 154 | 0
Interest Income Recognized | 0 | 0 | 0
Acquisition and development | Commercial and land development |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Impaired Balance | 1 | 0 | 3
Interest Income Recognized | 0 | 0 | 0
Commercial and industrial |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Impaired Balance | 322 | 413 | 575
Interest Income Recognized | 0 | 0 | 0
Residential mortgage | First lien |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Impaired Balance | 3,234 | 4,012 | 4,525
Interest Income Recognized | 59 | 58 | 33
Residential mortgage | Home equity – term |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Impaired Balance | 19 | 61 | 98
Interest Income Recognized | 0 | 0 | 0
Residential mortgage | Home equity lines of credit |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Impaired Balance | 657 | 488 | 455
Interest Income Recognized | 2 | 2 | 0
Installment and other loans |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Impaired Balance | 4 | 10 | 12
Interest Income Recognized | $ 0 | $ 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_FinancingReceivableImpairedLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5258-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableInterestIncomeAccrualMethod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=wk_NonOwnerOccupiedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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

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

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