Revenue Recognition (Schedule of Disaggregate MC Segment Revenue by Significant Product or Service) (Details) - USD ($) $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Net sales	$ 257,700	$ 271,100	$ 273,900	$ 251,400	$ 251,600	$ 251,900	$ 255,400	$ 223,600	$ 226,700	$ 222,100	$ 215,600	$ 199,300	$ 1,054,132	$ 982,479	$ 863,717
Machine Clothing [Member]
Disaggregation of Revenue [Line Items]
Net sales													601,254	611,858	$ 590,357
Americas PMC [Member]
Disaggregation of Revenue [Line Items]
Net sales													316,355	303,768
Eurasia PMC [Member]
Disaggregation of Revenue [Line Items]
Net sales													210,961	227,493
Engineered Fabrics [Member]
Disaggregation of Revenue [Line Items]
Net sales													$ 73,938	$ 80,597