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Basis of Presentation (detail) - USD ($)
3 Months Ended 9 Months Ended
Dec. 31, 2016
Dec. 26, 2015
Dec. 31, 2016
Dec. 26, 2015
Dec. 09, 2016
Sales Revenue [Line Items]          
Net Sales $ 369,705,000 $ 432,198,000 $ 979,566,000 $ 971,658,000  
Business Acquisition [Line Items]          
Relationship Transfer Agreement   $ 24,275,000   24,275,000  
Loan Agreement         $ 100,000,000
B&G Foods, Inc [Member]          
Sales Revenue [Line Items]          
Net Sales     $ 95,253,000 $ 126,050,000