Acquisitions Summary of the Allocation of the Total Cost of the Acquisition to Assets Acquired (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 29, 2015
Dec. 28, 2014
Nov. 14, 2014
Mar. 31, 2014
Assets acquired:        
Goodwill $ 1,716,272 $ 1,719,560    
Garden Protein International, Inc. [Member]        
Assets acquired:        
Accounts receivable     5,226  
Inventories     6,798  
Prepaid expenses and other assets     572  
Property and equipment     13,895  
Tradenames     51,950  
Distributor relationships     3,098  
Private label customer relationships     1,328  
Formulations     7,611  
Goodwill     83,155  
Fair value of assets acquired     173,632  
Liabilities assumed        
Accounts payable and accrued liabilities     5,007  
Income tax payable     7,878  
Long term deferred tax liability     1,532  
Other long-term liabilities     2,714  
Total cost of acquisition     156,502  
Gilster Duncan Hines Facility Acquisition [Member]        
Assets acquired:        
Inventories       10,188
Building and land       3,480
Plant assets       2,302
Deferred tax assets       1,278
Goodwill       9,550
Fair value of assets acquired       26,798
Liabilities assumed        
Accrued liabilities       178
Total cost of acquisition       $ 26,620