Assets Held for Sale (Detail) - USD ($) $ in Thousands	Dec. 30, 2017	Dec. 31, 2016
Long Lived Assets Held For Sale [Line Items]
Total assets held for sale	$ 15,323	$ 36,976
Distribution Rights
Long Lived Assets Held For Sale [Line Items]
Total assets held for sale	13,584	31,897
Acquired Hostess Bread Assets Plants and Depots
Long Lived Assets Held For Sale [Line Items]
Total assets held for sale	479	479
Other
Long Lived Assets Held For Sale [Line Items]
Total assets held for sale	$ 1,260	$ 4,600