Business Segments, Geographic Data, Sales by Product Group and Major Customers - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($) segment	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Segment Reporting Information [Line Items]
Number of reporting segments | segment	3
Long-lived Assets	$ 20,902	$ 23,227
Provision for doubtful accounts	9,586	11,803	$ 0
Toys R Us
Segment Reporting Information [Line Items]
Provision for doubtful accounts	$ 9,600	$ 11,800
Net Accounts Receivable | Wal-Mart and Target | Customer Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk percentage	61.40%	60.60%
China
Segment Reporting Information [Line Items]
Long-lived Assets	$ 15,825	$ 17,194
Molds and tools | China
Segment Reporting Information [Line Items]
Long-lived Assets	$ 15,800	$ 17,000