XML 122 R111.htm IDEA: XBRL DOCUMENT
v3.20.2

Summary of Total Cost and Employer Contributions (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 03, 2020 | Oct. 05, 2019 | Oct. 03, 2020 | Oct. 05, 2019
Compensation And Retirement Disclosure [Abstract] |  |  |  |
Defined Contribution Plan, Plan Name [Extensible List] | flo:FourZeroOneKRetirementSavingsPlanMember | flo:FourZeroOneKRetirementSavingsPlanMember | flo:FourZeroOneKRetirementSavingsPlanMember | flo:FourZeroOneKRetirementSavingsPlanMember
Total cost and employer contributions | $ 6,355 | $ 6,264 | $ 21,577 | $ 21,137

X
- References No definition available. + Details
Name: | us-gaap_CompensationAndRetirementDisclosureAbstract
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 -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
Name: | us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Indicates name of defined contribution plan designed to provide retirement benefits. Includes, but is not limited to, legal name of plan. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
Name: | us-gaap_DefinedContributionPlanPlanNameExtensibleList
Namespace Prefix: | us-gaap_
Data Type: | srt-types:extensibleListItemType
Balance Type: | na
Period Type: | duration