Restructuring (Schedule of Restructuring Charges) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Restructuring and other, net
Restructuring and other, net	$ 919	$ 2,256	$ 4,058	$ 27,213
Termination and Other Costs [Member]
Restructuring and other, net
Restructuring and other, net			4,157	27,289
Impairment of Plant and Equipment [Member]
Restructuring and other, net
Restructuring and other, net			611	88
Benefit Plan Curtailment/ Settlement [Member]
Restructuring and other, net
Restructuring and other, net			(710)	(164)
Machine Clothing [Member]
Restructuring and other, net
Restructuring and other, net	968	2,250	3,127	26,673
Machine Clothing [Member] | Termination and Other Costs [Member]
Restructuring and other, net
Restructuring and other, net			3,837	26,837
Machine Clothing [Member] | Impairment of Plant and Equipment [Member]
Restructuring and other, net
Restructuring and other, net
Machine Clothing [Member] | Benefit Plan Curtailment/ Settlement [Member]
Restructuring and other, net
Restructuring and other, net			(710)	(164)
Engineered Composites [Member]
Restructuring and other, net
Restructuring and other, net	(49)	6	931	540
Engineered Composites [Member] | Termination and Other Costs [Member]
Restructuring and other, net
Restructuring and other, net			320	452
Engineered Composites [Member] | Impairment of Plant and Equipment [Member]
Restructuring and other, net
Restructuring and other, net			611	88
Engineered Composites [Member] | Benefit Plan Curtailment/ Settlement [Member]
Restructuring and other, net
Restructuring and other, net