Revenue from Contracts with Customers - Disaggregation of Revenue by Geographical Location (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Disaggregation of Revenue [Line Items]
Net sales	$ 197,886	$ 180,041	$ 575,959	$ 520,407
North America
Disaggregation of Revenue [Line Items]
Net sales	126,733		369,012
Europe
Disaggregation of Revenue [Line Items]
Net sales	54,835		166,377
Asia
Disaggregation of Revenue [Line Items]
Net sales	16,318		40,570
Operating Segments | Performance Materials
Disaggregation of Revenue [Line Items]
Net sales	41,720	29,547	103,647	87,599
Operating Segments | Performance Materials | North America
Disaggregation of Revenue [Line Items]
Net sales	29,048		69,088
Operating Segments | Performance Materials | Europe
Disaggregation of Revenue [Line Items]
Net sales	12,120		34,007
Operating Segments | Performance Materials | Asia
Disaggregation of Revenue [Line Items]
Net sales	552		552
Operating Segments | Technical Nonwovens
Disaggregation of Revenue [Line Items]
Net sales	73,071	73,306	212,324	199,322
Operating Segments | Technical Nonwovens | North America
Disaggregation of Revenue [Line Items]
Net sales	44,092		128,788
Operating Segments | Technical Nonwovens | Europe
Disaggregation of Revenue [Line Items]
Net sales	18,757		56,197
Operating Segments | Technical Nonwovens | Asia
Disaggregation of Revenue [Line Items]
Net sales	10,222		27,339
Operating Segments | Thermal Acoustical Solutions
Disaggregation of Revenue [Line Items]
Net sales	88,211	84,376	279,817	255,162
Operating Segments | Thermal Acoustical Solutions | North America
Disaggregation of Revenue [Line Items]
Net sales	58,484		190,385
Operating Segments | Thermal Acoustical Solutions | Europe
Disaggregation of Revenue [Line Items]
Net sales	24,183		76,753
Operating Segments | Thermal Acoustical Solutions | Asia
Disaggregation of Revenue [Line Items]
Net sales	5,544		12,679
Eliminations and Other
Disaggregation of Revenue [Line Items]
Net sales	(5,116)	$ (7,188)	(19,829)	$ (21,676)
Eliminations and Other | North America
Disaggregation of Revenue [Line Items]
Net sales	(4,891)		(19,249)
Eliminations and Other | Europe
Disaggregation of Revenue [Line Items]
Net sales	(225)		(580)
Eliminations and Other | Asia
Disaggregation of Revenue [Line Items]
Net sales	$ 0		$ 0