Rationalizations Rationalization Costs Incurred (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	$ 831,000	$ 0	$ 917,000	$ 0
Restructuring Reserve, Accelerated Depreciation	4,200,000
Restructuring Costs and Asset Impairment Charges	4,245,000		21,700,000
Other Rationalization Charges in Cost of Sales	4,880,000		5,191,000
Other Restructuring Costs	54,000		79,000
Restructuring and related severance costs	831,000		917,000
Industrial Materials [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve, Accelerated Depreciation	3,832,000		20,852,000
Other Rationalization Charges in Cost of Sales	4,255,000		4,576,000
Other Restructuring Costs	54,000		79,000
Restructuring and related severance costs	831,000		945,000
Engineered Solutions [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Costs and Asset Impairment Charges	413,000		826,000
Other Rationalization Charges in Cost of Sales	625,000		615,000
Other Restructuring Costs	0		0
Restructuring and related severance costs	$ 0		$ (28,000)