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Inventories - Inventories (Detail) - USD ($)
$ in Thousands
Mar. 28, 2020
Dec. 28, 2019
Inventory Disclosure [Abstract]    
Bulk product $ 101,118 $ 114,308
Finished product 152,632 161,866
Packaging materials 4,621 4,639
Total $ 258,371 $ 280,813