Segment Information - Net Sales to Largest Customers (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue, Major Customer [Line Items]
Net sales	$ 1,473,705	$ 1,481,557	$ 860,063	$ 689,246	$ 1,524,281	$ 1,437,451	$ 844,706	$ 708,372	$ 4,504,571	$ 4,514,810	$ 4,881,493
Percentage of total consolidated net sales accounted by two largest customers									32.00%	34.00%	29.00%
Walmart
Revenue, Major Customer [Line Items]
Net sales									$ 1,010,000	$ 1,070,000	$ 1,020,000
Target
Revenue, Major Customer [Line Items]
Net sales									$ 440,000	$ 450,000	$ 370,000