Inventories - Summary of Inventories (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Inventory Disclosure [Abstract]
Finished products	$ 156,669	$ 116,354
Manufacturing materials	35,703	33,073
Plastic shells, plastic pallets and other inventories	37,520	34,191
Total inventories	$ 229,892	$ 183,618