Segment Information - Revenue from External Customers and Long-lived Assets (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 153,761	$ 125,632	$ 106,680	$ 102,528	$ 90,081	$ 93,023	$ 96,305	$ 93,797	$ 488,601	$ 373,206	$ 370,084
Property, plant and equipment, net	278,442				121,089				278,442	121,089	119,687
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									204,360	140,875	144,375
Property, plant and equipment, net	129,232				42,573				129,232	42,573	42,884
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									167,665	149,649	140,208
Property, plant and equipment, net	82,783				57,505				82,783	57,505	54,768
Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									58,470	38,233	39,576
Property, plant and equipment, net	32,848				21,011				32,848	21,011	22,035
Canada [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									8,657	9,415	7,464
Mexico [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									25,900	21,963	24,030
Property, plant and equipment, net	2,637								2,637
South America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									23,549	13,071	14,431
Property, plant and equipment, net	30,942								30,942
All Foreign Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									284,241	232,331	225,709
Property, plant and equipment, net	$ 149,210				$ 78,516				$ 149,210	$ 78,516	$ 76,803