Business Segment Information - Summary of Net Sales by Geographic Destination (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 108,537	$ 98,497	$ 104,075	$ 98,679	$ 104,622	$ 101,151	$ 100,954	$ 89,762	$ 409,788	$ 396,489	$ 402,277
Domestic Tax Authority [Member] | U.S. [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									316,873	305,505	294,682
Foreign Tax Authority [Member] | Italy [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									16,664	15,655	19,573
Foreign Tax Authority [Member] | United Kingdom [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									10,362	11,376	11,402
Foreign Tax Authority [Member] | Brazil [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									11,334	13,512	19,633
Foreign Tax Authority [Member] | Others [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									$ 54,555	$ 50,441	$ 56,987