Reportable Segments and Geographic Data (Schedule of Restructuring Costs by Reporting Segment) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Pension settlement
Pension settlement expense		$ 119,735
Restructuring expense
Charges/ (reversals)	25,108	7,061	9,317
Machine Clothing [Member]
Restructuring expense
Charges/ (reversals)	24,568	7,386	5,680
Engineered Composites [Member]
Restructuring expense
Charges/ (reversals)	540		57
Unallocated Expenses [Member]
Pension settlement
Pension settlement expense		119,735
Restructuring expense
Charges/ (reversals)		$ (325)	$ 3,580