Schedule of Intangible Assets Subject to Amortization (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($)
Alpine Valley Bread Company
Finite And Infinite Lived Intangible Assets [Line Items]
Acquired intangible assets subject to amortization	$ 64,600
Weighted average amortization years	29 years 10 months 24 days
Alpine Valley Bread Company | Trademarks
Finite And Infinite Lived Intangible Assets [Line Items]
Acquired intangible assets subject to amortization	$ 20,900
Weighted average amortization years	40 years
Attribution Method	Straight-line
Alpine Valley Bread Company | Customer Relationships
Finite And Infinite Lived Intangible Assets [Line Items]
Acquired intangible assets subject to amortization	$ 43,700
Weighted average amortization years	25 years
Attribution Method	Sum of year digits
Dave’s Killer Bread
Finite And Infinite Lived Intangible Assets [Line Items]
Acquired intangible assets subject to amortization	$ 176,300
Weighted average amortization years	34 years 1 month 6 days
Dave’s Killer Bread | Trademarks
Finite And Infinite Lived Intangible Assets [Line Items]
Acquired intangible assets subject to amortization	$ 107,700
Weighted average amortization years	40 years
Attribution Method	Straight-line
Dave’s Killer Bread | Customer Relationships
Finite And Infinite Lived Intangible Assets [Line Items]
Acquired intangible assets subject to amortization	$ 68,000
Weighted average amortization years	25 years
Attribution Method	Sum of year digits
Dave’s Killer Bread | Non-Compete Agreements
Finite And Infinite Lived Intangible Assets [Line Items]
Acquired intangible assets subject to amortization	$ 600
Weighted average amortization years	2 years
Attribution Method	Straight-line