Reportable Segments (Schedule of Restructuring Costs by Reporting Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 employees	Jun. 30, 2012
Pension settlement
Pension settlement expense		$ 110,560		$ 119,735
Restructuring expense
Restructuring expense	24,321	3,152	24,957	3,410
Reduction in employees			200
Operating Segments [Member] | Machine Clothing [Member]
Restructuring expense
Restructuring expense	24,230	2,903	24,423	3,576
Operating Segments [Member] | Engineered Composites [Member]
Restructuring expense
Restructuring expense	91		534
Unallocated Expenses [Member]
Pension settlement
Pension settlement expense	0	110,560	0	119,735
Restructuring expense
Restructuring expense		$ 249		$ (166)