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Acquisition of Squirrel Brand L.P. - Summary of Unaudited Pro Forma Results of Operations of Company's Acquisition at Beginning (Detail) - USD ($)
$ / shares in Units, $ in Thousands
6 Months Ended 12 Months Ended
Dec. 28, 2017
Jun. 29, 2017
Business Acquisition, Pro Forma Information [Abstract]    
Pro forma net sales $ 479,054 $ 863,267
Pro forma net income $ 18,762 $ 36,723
Pro forma diluted earnings per share $ 1.64 $ 3.22