Revenue from Contracts with Customers - Disaggregation of Revenue by Geographical Location (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	$ 205,274	$ 197,886	$ 644,110	$ 575,959
North America
Disaggregation of Revenue [Line Items]
Net sales	139,731	126,733	428,889	369,012
Europe
Disaggregation of Revenue [Line Items]
Net sales	53,796	54,835	174,286	166,377
Asia
Disaggregation of Revenue [Line Items]
Net sales	11,747	16,318	40,935	40,570
Operating Segments | Performance Materials
Disaggregation of Revenue [Line Items]
Net sales	60,000	41,720	189,682	103,647
Operating Segments | Performance Materials | North America
Disaggregation of Revenue [Line Items]
Net sales	42,693	29,048	136,892	69,088
Operating Segments | Performance Materials | Europe
Disaggregation of Revenue [Line Items]
Net sales	15,203	12,120	47,589	34,007
Operating Segments | Performance Materials | Asia
Disaggregation of Revenue [Line Items]
Net sales	2,104	552	5,201	552
Operating Segments | Technical Nonwovens
Disaggregation of Revenue [Line Items]
Net sales	63,912	73,071	198,596	212,324
Operating Segments | Technical Nonwovens | North America
Disaggregation of Revenue [Line Items]
Net sales	42,128	44,092	121,984	128,788
Operating Segments | Technical Nonwovens | Europe
Disaggregation of Revenue [Line Items]
Net sales	16,544	18,757	53,384	56,197
Operating Segments | Technical Nonwovens | Asia
Disaggregation of Revenue [Line Items]
Net sales	5,240	10,222	23,228	27,339
Operating Segments | Thermal Acoustical Solutions
Disaggregation of Revenue [Line Items]
Net sales	87,926	88,211	275,511	279,817
Operating Segments | Thermal Acoustical Solutions | North America
Disaggregation of Revenue [Line Items]
Net sales	61,315	58,484	189,152	190,385
Operating Segments | Thermal Acoustical Solutions | Europe
Disaggregation of Revenue [Line Items]
Net sales	22,208	24,183	73,853	76,753
Operating Segments | Thermal Acoustical Solutions | Asia
Disaggregation of Revenue [Line Items]
Net sales	4,403	5,544	12,506	12,679
Eliminations and Other
Disaggregation of Revenue [Line Items]
Net sales	(6,564)	(5,116)	(19,679)	(19,829)
Eliminations and Other | North America
Disaggregation of Revenue [Line Items]
Net sales	(6,405)	(4,891)	(19,139)	(19,249)
Eliminations and Other | Europe
Disaggregation of Revenue [Line Items]
Net sales	(159)	(225)	(540)	(580)
Eliminations and Other | Asia
Disaggregation of Revenue [Line Items]
Net sales	$ 0	$ 0	$ 0	$ 0