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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, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Revenue, Major Customer [Line Items]        
Net sales $ 95,182 $ 105,781 $ 166,008 $ 198,785
Net Sales | Customer Concentration Risk        
Revenue, Major Customer [Line Items]        
Net sales $ 43,725 $ 39,986 $ 78,013 $ 80,055
Percentage of Net Sales from major customer 45.90% 37.80% 47.00% 40.20%
Net Sales | Wal-Mart | Customer Concentration Risk        
Revenue, Major Customer [Line Items]        
Net sales $ 29,709 $ 18,454 $ 51,818 $ 43,211
Percentage of Net Sales from major customer 31.20% 17.40% 31.20% 21.70%
Net Sales | Target | Customer Concentration Risk        
Revenue, Major Customer [Line Items]        
Net sales $ 14,016 $ 21,532 $ 26,195 $ 36,844
Percentage of Net Sales from major customer 14.70% 20.40% 15.80% 18.50%