Reportable Segments (Schedule of Disaggregate MC Segment Revenue by Significant Product or Service) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Disaggregation of Revenue [Line Items]
Net sales	$ 271,133	$ 251,889	$ 796,454	$ 730,866
Machine Clothing [Member]
Disaggregation of Revenue [Line Items]
Net sales	151,324	157,608	450,673	461,165
Americas PMC [Member]
Disaggregation of Revenue [Line Items]
Net sales	82,763	79,246	239,686	229,072
Eurasia PMC [Member]
Disaggregation of Revenue [Line Items]
Net sales	50,330	59,321	155,849	172,675
Engineered Fabrics [Member]
Disaggregation of Revenue [Line Items]
Net sales	$ 18,231	$ 19,041	$ 55,138	$ 59,418