Restructuring (Schedule of Restructuring Charges) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Restructuring and other, net
Restructuring and other, net	$ 1,182	$ 636
Termination and Other Costs [Member]
Restructuring and other, net
Restructuring and other, net	1,675	546
Impairment of Plant and Equipment [Member]
Restructuring and other, net
Restructuring and other, net		90
Benefit Plan Curtailment/ Settlement [Member]
Restructuring and other, net
Restructuring and other, net	(493)
Machine Clothing [Member]
Restructuring and other, net
Restructuring and other, net	862	193
Machine Clothing [Member] | Termination and Other Costs [Member]
Restructuring and other, net
Restructuring and other, net	1,355	193
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	(493)
Engineered Composites [Member]
Restructuring and other, net
Restructuring and other, net	320	443
Engineered Composites [Member] | Termination and Other Costs [Member]
Restructuring and other, net
Restructuring and other, net	320	353
Engineered Composites [Member] | Impairment of Plant and Equipment [Member]
Restructuring and other, net
Restructuring and other, net		90
Engineered Composites [Member] | Benefit Plan Curtailment/ Settlement [Member]
Restructuring and other, net
Restructuring and other, net