Reportable Segments (Schedule of Restructuring Costs by Reporting Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 employees	Sep. 30, 2012
Pension settlement
Pension settlement expense				$ 119,735
Restructuring expense
Restructuring expense	2,256	2,739	27,213	6,149
Reduction in employees			200
Operating Segments [Member] | Machine Clothing [Member]
Restructuring expense
Restructuring expense	2,250	2,739	26,673	6,315
Operating Segments [Member] | Engineered Composites [Member]
Restructuring expense
Restructuring expense	6		540
Unallocated Expenses [Member]
Pension settlement
Pension settlement expense				119,735
Restructuring expense
Restructuring expense				$ (166)