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Derivative Financial Instruments - Additional Information (Detail) (USD $)
 1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended
Jul. 17, 2013
Dec. 28, 2013
Dec. 29, 2012
Dec. 31, 2011
Mar. 28, 2012
4.375% Senior Notes
Dec. 28, 2013
4.375% Senior Notes
Dec. 28, 2013
Cash Flow Hedging
Dec. 28, 2013
Other Current Assets
Dec. 29, 2012
Other Current Assets
Aug. 01, 2008
Interest Rate Contracts
Cash Flow Hedging
ButterKrust
Aug. 01, 2008
Interest Rate Contracts
Cash Flow Hedging
Holsum
Dec. 28, 2013
Interest rate risk derivatives
Dec. 29, 2012
Interest rate risk derivatives
Dec. 31, 2011
Interest rate risk derivatives
Derivative Instruments, Gain (Loss) [Line Items]                            
Commodity derivatives fair value, net   $ (11,500,000) $ (3,200,000)                      
Interest rate         4.375% 4.375%                
Debt instrument term 2 years       10 years                  
Cash settlement on hedge   3,100,000                        
Notional amount of interest rate swap             142,800,000     85,000,000 65,000,000      
Term loan outstanding   150,000,000                        
Fair value of interest rate swaps     (900,000)                      
Interest expense   28,875,000 23,411,000 10,172,000               800,000 2,800,000 4,000,000
Discontinued hedge positions   0 0 0                    
Derivative instrument, asset               $ 16,900,000 $ 9,000,000