Restructuring (Schedule of Restructuring Charges) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Restructuring and other, net
Restructuring and other, net	$ 636	$ 258
Termination and Other Costs [Member]
Restructuring and other, net
Restructuring and other, net	546	804
Impairment of Plant and Equipment [Member]
Restructuring and other, net
Restructuring and other, net	90	(546)
Machine Clothing [Member]
Restructuring and other, net
Restructuring and other, net	193	673
Machine Clothing [Member] | Termination and Other Costs [Member]
Restructuring and other, net
Restructuring and other, net	193	673
Machine Clothing [Member] | Impairment of Plant and Equipment [Member]
Restructuring and other, net
Restructuring and other, net
Engineered Composites [Member]
Restructuring and other, net
Restructuring and other, net	443
Engineered Composites [Member] | Termination and Other Costs [Member]
Restructuring and other, net
Restructuring and other, net	353
Engineered Composites [Member] | Impairment of Plant and Equipment [Member]
Restructuring and other, net
Restructuring and other, net	90
Unallocated Expenses [Member]
Restructuring and other, net
Restructuring and other, net		(415)
Unallocated Expenses [Member] | Termination and Other Costs [Member]
Restructuring and other, net
Restructuring and other, net		131
Unallocated Expenses [Member] | Impairment of Plant and Equipment [Member]
Restructuring and other, net
Restructuring and other, net		$ (546)