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Net Sales to Major Customers (Detail) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2018 | Mar. 31, 2017
Revenue, Major Customer [Line Items] |  |
Net Sales | $ 93,004 | $ 94,505
Wal-Mart |  |
Revenue, Major Customer [Line Items] |  |
Net Sales | 24,758 | 26,370
Target |  |
Revenue, Major Customer [Line Items] |  |
Net Sales | 15,312 | 12,671
Toys "R" Us |  |
Revenue, Major Customer [Line Items] |  |
Net Sales | 10,625 | 13,260
Major Customer |  |
Revenue, Major Customer [Line Items] |  |
Net Sales | $ 50,695 | $ 52,301
Net Sales | Customer Concentration Risk |  |
Revenue, Major Customer [Line Items] |  |
Percentage of Net Sales from major customer | 54.50% | 55.30%
Net Sales | Wal-Mart | Customer Concentration Risk |  |
Revenue, Major Customer [Line Items] |  |
Percentage of Net Sales from major customer | 26.60% | 27.90%
Net Sales | Target | Customer Concentration Risk |  |
Revenue, Major Customer [Line Items] |  |
Percentage of Net Sales from major customer | 16.50% | 13.40%
Net Sales | Toys "R" Us | Customer Concentration Risk |  |
Revenue, Major Customer [Line Items] |  |
Percentage of Net Sales from major customer | 11.40% | 14.00%

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