Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment [Abstract]

Summary of Carrying Values of Property, Plant and Equipment

The carrying values of property, plant and equipment were as follows:

	December 31,
	2014			2013
	(In thousands)
Land and land improvements	$	31,879		$	34,846
Buildings and leasehold improvements		131,534			124,688
Machinery and equipment		472,543			441,933
Computer equipment and software		96,546			89,919
Construction in process		33,726			36,388
Gross property, plant and equipment		766,228			727,774
Accumulated depreciation		(449,843	)		(426,939	)
Net property, plant and equipment	$	316,385		$	300,835