Changes to Goodwill by Acquisition (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Jan. 03, 2015	Dec. 28, 2013
Goodwill [Line Items]
Working capital adjustments		$ 315
Acquisition-related tax adjustments		(1,016)
Adjustment to assets held for sale		63
Adjustment for accrued liabilities		2,394
Adjustment to property, plant and equipment		1,123
Acquisitions during fiscal year		9,628us-gaap_GoodwillAcquiredDuringPeriod
Change in goodwill during fiscal year	3,180us-gaap_GoodwillPeriodIncreaseDecrease	12,507us-gaap_GoodwillPeriodIncreaseDecrease
Modesto
Goodwill [Line Items]
Acquisitions during fiscal year		4,209
Change in goodwill during fiscal year		4,209
Acquired Hostess Bread Asset
Goodwill [Line Items]
Acquisitions during fiscal year		5,419
Change in goodwill during fiscal year		5,419
Net changes to goodwill	3,180
Acquired Hostess Bread Asset \| Spare parts and final fair value adjustments
Goodwill [Line Items]
Net changes to goodwill	(3,503)
Acquired Hostess Bread Asset \| Property, plant and equipment final fair value adjustments
Goodwill [Line Items]
Net changes to goodwill	6,683
Lepage Bakeries Inc
Goodwill [Line Items]
Working capital adjustments	315	315
Acquisition-related tax adjustments	(1,016)	(1,016)
Adjustment to assets held for sale	63	63
Adjustment for accrued liabilities		2,394
Change in goodwill during fiscal year		1,756
Net changes to goodwill	900
Other
Goodwill [Line Items]
Adjustment to property, plant and equipment		1,123
Change in goodwill during fiscal year		$ 1,123

Business Combination Provisional Information Initial Accounting Incomplete Adjustment Assets Held For Sale

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Goodwill Adjustment Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Deferred Tax Liabilities Non current

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This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to financial assets acquired in connection with a business combination for which the initial accounting was incomplete.

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