Restructuring (Schedule of Restructuring Charges) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Restructuring and other, net
Restructuring and other, net	$ 1,957	$ 24,321	$ 3,139	$ 24,957
Termination and Other Costs [Member]
Restructuring and other, net
Restructuring and other, net			3,189	25,033
Impairment of Plant and Equipment [Member]
Restructuring and other, net
Restructuring and other, net			660	88
Benefit Plan Curtailment/ Settlement [Member]
Restructuring and other, net
Restructuring and other, net	(200)		(710)	(164)
Machine Clothing [Member]
Restructuring and other, net
Restructuring and other, net	1,297	24,230	2,159	24,423
Machine Clothing [Member] | Termination and Other Costs [Member]
Restructuring and other, net
Restructuring and other, net			2,869	24,587
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	660	91	980	534
Engineered Composites [Member] | Termination and Other Costs [Member]
Restructuring and other, net
Restructuring and other, net			320	446
Engineered Composites [Member] | Impairment of Plant and Equipment [Member]
Restructuring and other, net
Restructuring and other, net			660	88
Engineered Composites [Member] | Benefit Plan Curtailment/ Settlement [Member]
Restructuring and other, net
Restructuring and other, net