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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
12 Months Ended
Jun. 28, 2018
Jun. 29, 2017
Business Acquisition, Pro Forma Information [Abstract]    
Pro forma net sales $ 893,740 $ 863,267
Pro forma net income $ 32,995 $ 36,723
Pro forma diluted earnings per share $ 2.88 $ 3.22