Revenue from Contracts with Customers - Disaggregation of Revenue by Geographical Location (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	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, 2018	Dec. 31, 2017	Dec. 31, 2016
Disaggregation of Revenue [Line Items]
Net sales	$ 209,938	$ 197,886	$ 186,413	$ 191,660	$ 178,030	$ 180,041	$ 174,879	$ 165,487	$ 785,897	$ 698,437	$ 566,852
North America
Disaggregation of Revenue [Line Items]
Net sales									509,844
Europe
Disaggregation of Revenue [Line Items]
Net sales									221,799
Asia
Disaggregation of Revenue [Line Items]
Net sales									54,254
Operating Segments | Performance Materials
Disaggregation of Revenue [Line Items]
Net sales									169,217	116,669	111,128
Operating Segments | Performance Materials | North America
Disaggregation of Revenue [Line Items]
Net sales									117,313
Operating Segments | Performance Materials | Europe
Disaggregation of Revenue [Line Items]
Net sales									49,055
Operating Segments | Performance Materials | Asia
Disaggregation of Revenue [Line Items]
Net sales									2,849
Operating Segments | Technical Nonwovens
Disaggregation of Revenue [Line Items]
Net sales									277,071	269,077	155,505
Operating Segments | Technical Nonwovens | North America
Disaggregation of Revenue [Line Items]
Net sales									167,519
Operating Segments | Technical Nonwovens | Europe
Disaggregation of Revenue [Line Items]
Net sales									73,912
Operating Segments | Technical Nonwovens | Asia
Disaggregation of Revenue [Line Items]
Net sales									35,640
Operating Segments | Thermal Acoustical Solutions
Disaggregation of Revenue [Line Items]
Net sales									365,427	342,105	321,192
Operating Segments | Thermal Acoustical Solutions | North America
Disaggregation of Revenue [Line Items]
Net sales									250,133
Operating Segments | Thermal Acoustical Solutions | Europe
Disaggregation of Revenue [Line Items]
Net sales									99,529
Operating Segments | Thermal Acoustical Solutions | Asia
Disaggregation of Revenue [Line Items]
Net sales									15,765
Eliminations and Other
Disaggregation of Revenue [Line Items]
Net sales									(25,818)	$ (29,414)	$ (20,973)
Eliminations and Other | North America
Disaggregation of Revenue [Line Items]
Net sales									(25,121)
Eliminations and Other | Europe
Disaggregation of Revenue [Line Items]
Net sales									(697)
Eliminations and Other | Asia
Disaggregation of Revenue [Line Items]
Net sales									$ 0