Property, Plant and Equipment - Summary of Carrying Values of Property, Plant and Equipment (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	$ 766,228	$ 727,774
Accumulated depreciation	(449,843)	(426,939)
Net property, plant and equipment	316,385	300,835
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	31,879	34,846
Buildings and Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	131,534	124,688
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	472,543	441,933
Computer Equipment and Software [Member]
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	96,546	89,919
Construction in Process [Member]
Property, Plant and Equipment [Line Items]
Gross property, plant and equipment	$ 33,726	$ 36,388