Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2016

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,
	2016			2015
	(In thousands)
Land and land improvements	$	28,462		$	29,235
Buildings and leasehold improvements	136,230			135,154
Machinery and equipment	499,400			483,773
Computer equipment and software	123,909			112,888
Construction in process	35,191			28,274
Gross property, plant and equipment	823,192			789,324
Accumulated depreciation	(513,901		)	(478,695		)
Net property, plant and equipment	$	309,291		$	310,629