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Fair Value of Stock Consideration (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Jan. 03, 2015
Fair Value Measurements [Line Items]
Value of Flowers shares issued	$ 50,000flo_BusinessAcquisitionEquityInterestsIssuedOrIssuableBasisForDeterminingValue
Implied fair value of restricted shares	45,887us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable
Fiscal Years 2012
Fair Value Measurements [Line Items]
Value of Flowers shares issued	25,000flo_BusinessAcquisitionEquityInterestsIssuedOrIssuableBasisForDeterminingValue / flo_DivisionOfStockIssuedAxis = flo_FiscalYearsTwentyTwelveMember
Implied fair value of restricted shares	23,626us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable / flo_DivisionOfStockIssuedAxis = flo_FiscalYearsTwentyTwelveMember
Exercise price (per share)	$ 13.65us-gaap_FairValueAssumptionsExercisePrice / flo_DivisionOfStockIssuedAxis = flo_FiscalYearsTwentyTwelveMember
Expected term (yrs)	4 months 13 days
Volatility	25.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate / flo_DivisionOfStockIssuedAxis = flo_FiscalYearsTwentyTwelveMember
Risk-free rate	0.10%us-gaap_FairValueAssumptionsRiskFreeInterestRate / flo_DivisionOfStockIssuedAxis = flo_FiscalYearsTwentyTwelveMember
Dividend yield	3.00%us-gaap_FairValueAssumptionsExpectedDividendRate / flo_DivisionOfStockIssuedAxis = flo_FiscalYearsTwentyTwelveMember
Fiscal Year 2013
Fair Value Measurements [Line Items]
Value of Flowers shares issued	10,000flo_BusinessAcquisitionEquityInterestsIssuedOrIssuableBasisForDeterminingValue / flo_DivisionOfStockIssuedAxis = flo_FiscalYearTwentyThirteenMember
Implied fair value of restricted shares	9,154us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable / flo_DivisionOfStockIssuedAxis = flo_FiscalYearTwentyThirteenMember
Exercise price (per share)	$ 13.65us-gaap_FairValueAssumptionsExercisePrice / flo_DivisionOfStockIssuedAxis = flo_FiscalYearTwentyThirteenMember
Expected term (yrs)	1 year
Volatility	25.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate / flo_DivisionOfStockIssuedAxis = flo_FiscalYearTwentyThirteenMember
Risk-free rate	0.20%us-gaap_FairValueAssumptionsRiskFreeInterestRate / flo_DivisionOfStockIssuedAxis = flo_FiscalYearTwentyThirteenMember
Dividend yield	3.00%us-gaap_FairValueAssumptionsExpectedDividendRate / flo_DivisionOfStockIssuedAxis = flo_FiscalYearTwentyThirteenMember
Fiscal Year 2014
Fair Value Measurements [Line Items]
Value of Flowers shares issued	5,000flo_BusinessAcquisitionEquityInterestsIssuedOrIssuableBasisForDeterminingValue / flo_DivisionOfStockIssuedAxis = flo_FiscalYearTwentyFourteenMember
Implied fair value of restricted shares	4,447us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable / flo_DivisionOfStockIssuedAxis = flo_FiscalYearTwentyFourteenMember
Exercise price (per share)	$ 13.65us-gaap_FairValueAssumptionsExercisePrice / flo_DivisionOfStockIssuedAxis = flo_FiscalYearTwentyFourteenMember
Expected term (yrs)	2 years
Volatility	25.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate / flo_DivisionOfStockIssuedAxis = flo_FiscalYearTwentyFourteenMember
Risk-free rate	0.20%us-gaap_FairValueAssumptionsRiskFreeInterestRate / flo_DivisionOfStockIssuedAxis = flo_FiscalYearTwentyFourteenMember
Dividend yield	3.00%us-gaap_FairValueAssumptionsExpectedDividendRate / flo_DivisionOfStockIssuedAxis = flo_FiscalYearTwentyFourteenMember
Fiscal Year 2015
Fair Value Measurements [Line Items]
Value of Flowers shares issued	5,000flo_BusinessAcquisitionEquityInterestsIssuedOrIssuableBasisForDeterminingValue / flo_DivisionOfStockIssuedAxis = flo_FiscalYearTwentyFifteenMember
Implied fair value of restricted shares	4,363us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable / flo_DivisionOfStockIssuedAxis = flo_FiscalYearTwentyFifteenMember
Exercise price (per share)	$ 13.65us-gaap_FairValueAssumptionsExercisePrice / flo_DivisionOfStockIssuedAxis = flo_FiscalYearTwentyFifteenMember
Expected term (yrs)	3 years
Volatility	25.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate / flo_DivisionOfStockIssuedAxis = flo_FiscalYearTwentyFifteenMember
Risk-free rate	0.30%us-gaap_FairValueAssumptionsRiskFreeInterestRate / flo_DivisionOfStockIssuedAxis = flo_FiscalYearTwentyFifteenMember
Dividend yield	3.00%us-gaap_FairValueAssumptionsExpectedDividendRate / flo_DivisionOfStockIssuedAxis = flo_FiscalYearTwentyFifteenMember
Fiscal Year 2016
Fair Value Measurements [Line Items]
Value of Flowers shares issued	5,000flo_BusinessAcquisitionEquityInterestsIssuedOrIssuableBasisForDeterminingValue / flo_DivisionOfStockIssuedAxis = flo_FiscalYearTwentySixteenMember
Implied fair value of restricted shares	$ 4,297us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable / flo_DivisionOfStockIssuedAxis = flo_FiscalYearTwentySixteenMember
Exercise price (per share)	$ 13.65us-gaap_FairValueAssumptionsExercisePrice / flo_DivisionOfStockIssuedAxis = flo_FiscalYearTwentySixteenMember
Expected term (yrs)	4 years
Volatility	25.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate / flo_DivisionOfStockIssuedAxis = flo_FiscalYearTwentySixteenMember
Risk-free rate	0.40%us-gaap_FairValueAssumptionsRiskFreeInterestRate / flo_DivisionOfStockIssuedAxis = flo_FiscalYearTwentySixteenMember
Dividend yield	3.00%us-gaap_FairValueAssumptionsExpectedDividendRate / flo_DivisionOfStockIssuedAxis = flo_FiscalYearTwentySixteenMember

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Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

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-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477



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