Segment Information - Consolidated Net Sales by Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	$ 218,025	$ 191,660
Operating Segments | Performance Materials
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	64,580	30,693
Operating Segments | Performance Materials | Filtration
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	23,934	23,142
Operating Segments | Performance Materials | Sealing and Advanced Solutions
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	40,646	7,551
Operating Segments | Technical Nonwovens
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	65,606	67,541
Operating Segments | Technical Nonwovens | Industrial Filtration
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	42,364	40,231
Operating Segments | Technical Nonwovens | Advanced Materials
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	23,242	27,310
Operating Segments | Thermal Acoustical Solutions
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	94,313	101,437
Operating Segments | Thermal Acoustical Solutions | Parts
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	84,576	88,122
Operating Segments | Thermal Acoustical Solutions | Tooling
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	9,737	13,315
Eliminations and Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	$ (6,474)	$ (8,011)