Segment Information - Summary (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	$ 146,160		$ 220,811	$ 346,687	$ 438,836
Operating income	(1,746)		13,179	(57,314)	22,229
Impairment of goodwill and other long-lived assets	0	$ 61,109	0	61,109	0
Performance Materials
Segment Reporting, Revenue Reconciling Item [Line Items]
Impairment of goodwill and other long-lived assets		61,109
Technical Nonwovens
Segment Reporting, Revenue Reconciling Item [Line Items]
Impairment of goodwill and other long-lived assets		0
Thermal Acoustical Solutions
Segment Reporting, Revenue Reconciling Item [Line Items]
Impairment of goodwill and other long-lived assets		$ 0
Operating Segments | Performance Materials
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	58,473		65,102	123,693	129,682
Operating income	5,443		3,303	(51,498)	4,762
Impairment of goodwill and other long-lived assets				61,100
Amortization of intangible assets	4,000		4,100	7,900	8,100
Operating Segments | Performance Materials | Filtration
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	29,636		24,732	55,523	48,666
Operating Segments | Performance Materials | Sealing and Advanced Solutions
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	28,837		40,370	68,170	81,016
Operating Segments | Technical Nonwovens
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	52,007		69,078	109,410	134,684
Operating income	6,684		7,844	10,497	12,578
Amortization of intangible assets	1,200		1,300	2,300	2,600
Operating Segments | Technical Nonwovens | Industrial Filtration
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	29,413		38,706	60,782	81,070
Operating Segments | Technical Nonwovens | Advanced Materials
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	22,594		30,372	48,628	53,614
Intercompany sales	1,400		4,600	6,400	9,300
Operating Segments | Thermal Acoustical Solutions
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	37,448		93,272	121,209	187,585
Operating income	(6,285)		7,357	(657)	16,848
Operating Segments | Thermal Acoustical Solutions | Parts
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	32,448		85,705	109,769	170,281
Operating Segments | Thermal Acoustical Solutions | Tooling
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	5,000		7,567	11,440	17,304
Eliminations and Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	(1,768)		(6,641)	(7,625)	(13,115)
Corporate Office Expenses
Segment Reporting, Revenue Reconciling Item [Line Items]
Operating income	$ (7,588)		$ (5,325)	$ (15,656)	$ (11,959)