Reportable Segments (Schedule of Restructuring Costs by Reporting Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Pension settlement
Pension settlement expense		$ 9,175
Restructuring expense
Restructuring expense	636	258
Machine Clothing [Member]
Restructuring expense
Restructuring expense	193	673
Engineered Composites [Member]
Restructuring expense
Restructuring expense	443
Unallocated Expenses [Member]
Pension settlement
Pension settlement expense		9,175
Restructuring expense
Restructuring expense		$ (415)