Rationalizations Rationalization Text (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014 metric_tons	Jun. 30, 2013
Restructuring and related severance costs	$ 4,245,000		$ 21,700,000
Estimated Reduction in Capacity			60,000
Restructuring and Related Cost, Incurred Cost	831,000	0	917,000	0
Restructuring and Related Cost, Expected Cost			95,000,000
Restructuring and Related Cost, Expected Number of Positions Eliminated			600
Restructuring and Related Cost, Number of Positions Eliminated, Period Percent				20.00%
Restructuring and related - expected cash outlays			25,000,000
Restructuring and Related Cost, Cost Incurred to Date			93,600,000
Impairment of Long-Lived Assets Held-for-use	121,570,000	0	121,570,000	0
Restructuring Reserve, Accelerated Depreciation	4,200,000
Other Rationalization Charges in Cost of Sales	4,880,000		5,191,000
Goodwill, Impairment Loss				(413,000)
Inventory Write-down			10,600,000
Restructuring and Related Cost, Expected Cost Remaining			12,000,000
Effect on Future Cash Flows, Amount			7,000,000
Engineered Solutions [Member]
Restructuring and related severance costs	413,000		826,000
Restructuring and Related Cost, Expected Number of Positions Eliminated			40
Other Rationalization Charges in Cost of Sales	625,000		615,000
Industrial Materials [Member]
Restructuring Reserve, Accelerated Depreciation	3,832,000		20,852,000
Other Rationalization Charges in Cost of Sales	$ 4,255,000		$ 4,576,000