Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2011

Property, Plant and Equipment [Abstract]

Carrying values of property, plant and equipment

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

	December 31,
	2011			2010
	(In thousands)
Land and land improvements	$	34,005		$	34,794
Buildings and leasehold improvements		137,639			150,133
Machinery and equipment		426,082			375,784
Computer equipment and software		66,498			61,988
Construction in process		21,566			25,702
Gross property, plant and equipment		685,790			648,401
Accumulated depreciation		(398,857	)		(369,535	)
Net property, plant and equipment	$	286,933		$	278,866