Property, Plant and Equipment (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 1,153,424,000	$ 1,259,819,000
Accumulated depreciation and amortization	(795,954,000)	(864,706,000)
Property, plant and equipment, net	357,470,000	395,113,000	$ 418,830,000
Expenditures for maintenance and repairs	16,600,000	17,400,000	17,500,000
Depreciation expense	52,974,000	56,575,000	57,182,000
Software amortization	6,500,000	6,200,000	6,000,000
Capital expenditures and purchased software	50,595,000	58,873,000	$ 64,457,000
Unamortized software cost	9,600,000	$ 13,800,000
Asset held for sale real property	4,988,000
Former manufacturing facility in Germany [Member]
Property, Plant and Equipment [Line Items]
Accumulated depreciation and amortization		$ (6,200,000)
Asset held for sale real property	5,000
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 14,307,000	22,967,000
Estimated useful life	25 years
Land and Land Improvements [Member] | Former manufacturing facility in Germany [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		7,700,000
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 211,027,000	225,094,000
Buildings [Member] | Former manufacturing facility in Germany [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		7,600,000
Buildings [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	25 years
Buildings [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	40 years
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 828,409,000	892,171,000
Estimated useful life	10 years
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 6,074,000	6,716,000
Estimated useful life	5 years
Computer and Other Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 14,813,000	13,692,000
Computer and Other Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	3 years
Computer and Other Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	10 years
Software [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 52,503,000	50,586,000
Software [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	5 years
Software [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful life	8 years
Capital expenditures in progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 26,291,000	$ 48,593,000