Business Segments, Geographic Data, and Sales by Major Customers - Net Sales to Major Customers (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenue, Major Customer [Line Items]
Net sales	$ 78,758	$ 95,182	$ 145,315	$ 166,008
Net Sales | Customer Concentration Risk
Revenue, Major Customer [Line Items]
Net sales	$ 41,137	$ 43,725	$ 74,262	$ 78,013
Percentage of Net Sales	52.20%	45.90%	51.10%	47.00%
Net Sales | Customer Concentration Risk | Wal-Mart
Revenue, Major Customer [Line Items]
Net sales	$ 22,208	$ 29,709	$ 40,718	$ 51,818
Percentage of Net Sales	28.20%	31.20%	28.00%	31.20%
Net Sales | Customer Concentration Risk | Target
Revenue, Major Customer [Line Items]
Net sales	$ 18,929	$ 14,016	$ 33,544	$ 26,195
Percentage of Net Sales	24.00%	14.70%	23.10%	15.80%