Revenue - Summary of Disaggregated Information Pertaining to Net Sales (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation Of Revenue [Line Items]
Net sales	$ 216,183	$ 235,053	$ 447,743	$ 464,186
Product [Member]
Disaggregation Of Revenue [Line Items]
Net sales	216,183	235,053	447,743	464,186
Composite Fibers [Member]
Disaggregation Of Revenue [Line Items]
Net sales	122,137	132,581	254,848	261,298
Composite Fibers [Member] | Europe, Middle East and Africa [Member]
Disaggregation Of Revenue [Line Items]
Net sales	68,807	80,002	148,402	157,916
Composite Fibers [Member] | Americas [Member]
Disaggregation Of Revenue [Line Items]
Net sales	33,352	33,964	66,073	65,604
Composite Fibers [Member] | Asia Pacific [Member]
Disaggregation Of Revenue [Line Items]
Net sales	19,978	18,615	40,373	37,778
Composite Fibers [Member] | Food & Beverage [Member]
Disaggregation Of Revenue [Line Items]
Net sales	73,014	70,390	144,481	141,843
Composite Fibers [Member] | Wallcovering [Member]
Disaggregation Of Revenue [Line Items]
Net sales	11,259	22,958	31,152	41,508
Composite Fibers [Member] | Technical Specialties [Member]
Disaggregation Of Revenue [Line Items]
Net sales	18,816	19,266	38,823	38,554
Composite Fibers [Member] | Composite Laminates [Member]
Disaggregation Of Revenue [Line Items]
Net sales	8,126	9,218	17,889	17,693
Composite Fibers [Member] | Metallized [Member]
Disaggregation Of Revenue [Line Items]
Net sales	10,922	10,749	22,503	21,700
Airlaid Materials [Member]
Disaggregation Of Revenue [Line Items]
Net sales	94,046	102,472	192,895	202,888
Airlaid Materials [Member] | Europe, Middle East and Africa [Member]
Disaggregation Of Revenue [Line Items]
Net sales	45,879	55,206	98,599	109,645
Airlaid Materials [Member] | Americas [Member]
Disaggregation Of Revenue [Line Items]
Net sales	45,262	45,261	89,648	89,595
Airlaid Materials [Member] | Asia Pacific [Member]
Disaggregation Of Revenue [Line Items]
Net sales	2,905	2,005	4,648	3,648
Airlaid Materials [Member] | Feminine Hygiene [Member]
Disaggregation Of Revenue [Line Items]
Net sales	50,668	51,851	100,764	106,839
Airlaid Materials [Member] | Specialty Wipes [Member]
Disaggregation Of Revenue [Line Items]
Net sales	20,947	17,656	38,159	34,988
Airlaid Materials [Member] | Tabletop [Member]
Disaggregation Of Revenue [Line Items]
Net sales	5,529	16,347	20,581	29,678
Airlaid Materials [Member] | Adult Incontinence [Member]
Disaggregation Of Revenue [Line Items]
Net sales	5,011	6,365	11,156	11,853
Airlaid Materials [Member] | Home Care [Member]
Disaggregation Of Revenue [Line Items]
Net sales	6,278	4,352	11,490	8,316
Airlaid Materials [Member] | Other [Member]
Disaggregation Of Revenue [Line Items]
Net sales	$ 5,613	$ 5,901	$ 10,745	$ 11,214