Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2011

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant, and Equipment

The components of property, plant and equipment are summarized below:

(in thousands)	2011	2010	Estimated useful life
Land and land improvements	$28,145	$29,645	25 years for improvements
Buildings	247,274	250,157	25 to 40 years
Machinery and equipment	836,193	834,699	10 years
Furniture and fixtures	9,423	22,243	5 years
Computer and other equipment	11,261	8,624	3 to 10 years
Software	50,661	47,719	5 to 8 years
Property, plant and equipment, gross	$1,182,957	$1,193,087
Accumulated depreciation	(743,441)	(711,135)
Property, plant and equipment, net	$439,516	$481,952