Information by Geographic Area (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived Assets	$ 22,617		$ 22,841
Net Sales	94,505	$ 95,809
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived Assets	15,764		15,710
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived Assets	6,347		6,587
Net Sales	69,560	70,968
Hong Kong
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived Assets	506		$ 544
Net Sales	219	339
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	12,560	12,755
Canada
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	4,444	4,650
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	$ 7,722	$ 7,097