Schedule of Identified Assets Acquired and Liabilities Assumed (Detail) (USD $) In Thousands, unless otherwise specified	Oct. 06, 2012	Jul. 21, 2012
Business Acquisition [Line Items]
Flowers Foods, Inc. common stock		$ 45,887
Lepage Bakeries Inc
Business Acquisition [Line Items]
Cash		300,000
Cash paid for preliminary tax adjustment	18,400	18,426
Accrued working capital adjustment estimate		158
Deferred payment obligations		17,663
Flowers Foods, Inc. common stock		45,887
Total fair value of consideration transferred		382,134
Financial assets		11,487
Inventories		4,537
Property, plant, and equipment		60,332
Assets Held for sale - Distributor routes		10,000
Identifiable intangible assets		256,400
Deferred income taxes		(1,318)
Financial liabilities		(15,526)
Net recognized amounts of identifiable assets acquired		325,912
Goodwill		56,222
Tasty Baking Company
Business Acquisition [Line Items]
Total fair value of consideration transferred		172,109
Financial assets		44,153
Inventories		7,789
Property, plant, and equipment		99,796
Identifiable intangible assets		51,419
Deferred income taxes		15,516
Financial liabilities		(66,359)
Net recognized amounts of identifiable assets acquired		152,314
Goodwill		$ 19,795