XML 84 R69.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Retirement Plans - Tabular Disclosure (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 28, 2024 | Dec. 30, 2023 | Dec. 31, 2022
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Contribution Plan, Cost | $ 4,388 | $ 7,578 | $ 6,679
Retirement savings plan [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Contribution Plan, Cost | 5,976 | 5,882 | 5,155
Deferred compensation plan [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Contribution Plan, Cost | 2,381 | 821 | 815
Supplemental executive retirement plan [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Contribution Plan, Cost | $ 793 | $ 875 | $ 709

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

X
- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 70 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480794/715-70-50-1 + Details
Name: | us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=wmk_RetirementSavingsPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=wmk_DeferredCompensationPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=wmk_SupplementalExecutiveRetirementPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |