Revenue - Summary of Disaggregated Information Pertaining to Net Sales (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation Of Revenue [Line Items]
Net sales	$ 244,911	$ 216,183	$ 470,585	$ 447,743
Product [Member]
Disaggregation Of Revenue [Line Items]
Net sales	244,911	216,183	470,585	447,743
Composite Fibers [Member]
Disaggregation Of Revenue [Line Items]
Net sales	141,598	122,137	282,847	254,848
Composite Fibers [Member] | Europe, Middle East and Africa [Member]
Disaggregation Of Revenue [Line Items]
Net sales	85,796	68,807	172,741	148,402
Composite Fibers [Member] | Americas [Member]
Disaggregation Of Revenue [Line Items]
Net sales	35,369	33,352	67,210	66,073
Composite Fibers [Member] | Asia Pacific [Member]
Disaggregation Of Revenue [Line Items]
Net sales	20,433	19,978	42,896	40,373
Composite Fibers [Member] | Food & Beverage [Member]
Disaggregation Of Revenue [Line Items]
Net sales	73,535	73,014	150,488	144,481
Composite Fibers [Member] | Wallcovering [Member]
Disaggregation Of Revenue [Line Items]
Net sales	24,182	11,259	46,811	31,152
Composite Fibers [Member] | Technical Specialties [Member]
Disaggregation Of Revenue [Line Items]
Net sales	24,708	18,816	48,203	38,823
Composite Fibers [Member] | Composite Laminates [Member]
Disaggregation Of Revenue [Line Items]
Net sales	10,549	8,126	20,358	17,889
Composite Fibers [Member] | Metallized [Member]
Disaggregation Of Revenue [Line Items]
Net sales	8,624	10,922	16,987	22,503
Airlaid Materials [Member]
Disaggregation Of Revenue [Line Items]
Net sales	103,313	94,046	187,738	192,895
Airlaid Materials [Member] | Europe, Middle East and Africa [Member]
Disaggregation Of Revenue [Line Items]
Net sales	49,552	45,879	94,624	98,599
Airlaid Materials [Member] | Americas [Member]
Disaggregation Of Revenue [Line Items]
Net sales	52,031	45,262	89,516	89,648
Airlaid Materials [Member] | Asia Pacific [Member]
Disaggregation Of Revenue [Line Items]
Net sales	1,730	2,905	3,598	4,648
Airlaid Materials [Member] | Feminine Hygiene [Member]
Disaggregation Of Revenue [Line Items]
Net sales	47,184	50,668	94,825	100,764
Airlaid Materials [Member] | Specialty Wipes [Member]
Disaggregation Of Revenue [Line Items]
Net sales	21,371	20,947	37,287	38,159
Airlaid Materials [Member] | Tabletop [Member]
Disaggregation Of Revenue [Line Items]
Net sales	17,188	5,529	24,051	20,581
Airlaid Materials [Member] | Adult Incontinence [Member]
Disaggregation Of Revenue [Line Items]
Net sales	5,083	5,011	9,761	11,156
Airlaid Materials [Member] | Home Care [Member]
Disaggregation Of Revenue [Line Items]
Net sales	6,339	6,278	10,262	11,490
Airlaid Materials [Member] | Other [Member]
Disaggregation Of Revenue [Line Items]
Net sales	$ 6,148	$ 5,613	$ 11,552	$ 10,745