Reportable Segments (Schedule of Restructuring Costs by Reporting Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Restructuring expense
Restructuring expense	$ 1,957	$ 24,321	$ 3,139	$ 24,957
Machine Clothing [Member]
Restructuring expense
Restructuring expense	1,297	24,230	2,159	24,423
Engineered Composites [Member]
Restructuring expense
Restructuring expense	$ 660	$ 91	$ 980	$ 534