Remainder of legal settlement funds.

No definition available.

Name:	flo_RemainderOfLegalSettlementFunds
Namespace Prefix:	flo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due in settlement of a claim for reimbursement from an insurance company when the Company has suffered a loss covered under an insurance policy. For classified balance sheets, represents the current amount receivable, that is amounts expected to be collected within one year or the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.8)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount awarded to other party in judgment or settlement of litigation.

+ References

No definition available.

+ Details

Name:	us-gaap_LitigationSettlementAmountAwardedToOtherParty
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- 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

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

- Definition

States the date the complaint was formally filed in a court of law, in arbitration or mediation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14326-108349

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 9
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14557-108349

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14435-108349

+ Details

Name:	us-gaap_LossContingencyLawsuitFilingDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The total number of new claims filed pertaining to a loss contingency during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14435-108349

+ Details

Name:	us-gaap_LossContingencyNewClaimsFiledNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of cash paid for the settlement of litigation or for other legal issues during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3536-108585

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Commitments and Contingencies - Additional Information (Detail) $ in Thousands			1 Months Ended		4 Months Ended
	Jan. 31, 2020 USD ($)	Sep. 07, 2018 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Apr. 18, 2020 Lawsuits	Dec. 28, 2019 USD ($)	Dec. 11, 2019 USD ($)	Oct. 28, 2019 USD ($)	Jul. 13, 2019 USD ($)
Loss Contingencies [Line Items]
Alleged complaints \| Lawsuits					20
Legal settlement		$ 9,000
Legal settlement, amount paid			$ 3,500	$ 4,200
Remainder of legal settlement funds									$ 1,300
Recovery from legal settlement in principle						$ 22,300	$ 21,000
Other Current Assets
Loss Contingencies [Line Items]
Recovery from legal settlement in principle								$ 1,300
Settlement Funds
Loss Contingencies [Line Items]
Legal settlement		5,400
Attorneys Fees
Loss Contingencies [Line Items]
Legal settlement		$ 3,600
Class and / or Collective action treatment
Loss Contingencies [Line Items]
Alleged complaints \| Lawsuits					15
Individual claims or do not seek class or collective action treatment or, in cases class treatment was sought
Loss Contingencies [Line Items]
Alleged complaints \| Lawsuits					5
Plaintiffs' motions for class certification
Loss Contingencies [Line Items]
Alleged complaints \| Lawsuits					9
Rosinbaum - NorthCarolina
Loss Contingencies [Line Items]
Legal settlement	$ 8,300
Lawsuit filing date	12/1/2015
Neff - Vermont
Loss Contingencies [Line Items]
Legal settlement	$ 7,600
Lawsuit filing date	12/2/2015
Carr - Pennsylvania
Loss Contingencies [Line Items]
Legal settlement	$ 13,250
Lawsuit filing date	12/1/2015
Noll Maine
Loss Contingencies [Line Items]
Lawsuit filing date	12/3/2015
Richard Louisiana
Loss Contingencies [Line Items]
Lawsuit filing date	10/21/2015
Boulange Pennsylvania
Loss Contingencies [Line Items]
Lawsuit filing date	3/25/2016
Medrano Mexico
Loss Contingencies [Line Items]
Lawsuit filing date	4/27/2016
Martins Florida
Loss Contingencies [Line Items]
Lawsuit filing date	11/8/2016
Caddick - Pennsylvania
Loss Contingencies [Line Items]
Lawsuit filing date	5/15/2019
Green - Tennessee
Loss Contingencies [Line Items]
Lawsuit filing date					2/1/2019