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Commitments and Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | Jan. 03, 2015 | Dec. 28, 2013
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Commitment And Contingencies [Line Items] |  |
Self-insurance reserves, current liabilities | $ 24.4 us-gaap_SelfInsuranceReserveCurrent | $ 24.9 us-gaap_SelfInsuranceReserveCurrent

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- Details
Name: | flo_CommitmentAndContingenciesLineItems
Namespace Prefix: | flo_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Carrying amount of accrued known and estimated losses incurred as of the balance sheet date for which no insurance coverage exists, and for which a claim has been made or is probable of being asserted, typically arising from workmen's compensation-type of incidents and personal injury to nonemployees from accidents on the entity's property that are expected to be paid within one year (or the normal operating cycle, if longer). + References No definition available. + Details
Name: | us-gaap_SelfInsuranceReserveCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant