Reportable Segments (Schedule of Restructuring Costs by Reporting Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Restructuring expense
Restructuring expense	$ 919	$ 2,256	$ 4,058	$ 27,213
Machine Clothing [Member]
Restructuring expense
Restructuring expense	968	2,250	3,127	26,673
Engineered Composites [Member]
Restructuring expense
Restructuring expense	$ (49)	$ 6	$ 931	$ 540