Net Sales to Major Customers (Detail) - USD ($) $ in Thousands	3 Months Ended
	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%