Revenue - Summary of Disaggregated Information Pertaining to Net Sales from Contracts with Customers (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disaggregation Of Revenue [Line Items]
Net sales	$ 235,282	$ 233,473	$ 216,183	$ 231,560	$ 230,972	$ 232,515	$ 235,053	$ 229,133	$ 916,498	$ 927,673	$ 866,286
Americas [Member]
Disaggregation Of Revenue [Line Items]
Net sales									166,131	167,887	124,690
Product [Member]
Disaggregation Of Revenue [Line Items]
Net sales									916,498	927,673	866,286
Composite Fibers [Member]
Disaggregation Of Revenue [Line Items]
Net sales									525,089	521,666	554,869
Composite Fibers [Member] | Europe, Middle East and Africa [Member]
Disaggregation Of Revenue [Line Items]
Net sales									315,881	312,218	354,978
Composite Fibers [Member] | Americas [Member]
Disaggregation Of Revenue [Line Items]
Net sales									128,385	132,845	113,546
Composite Fibers [Member] | Asia Pacific [Member]
Disaggregation Of Revenue [Line Items]
Net sales									80,823	76,603	86,345
Composite Fibers [Member] | Food & Beverage [Member]
Disaggregation Of Revenue [Line Items]
Net sales									285,665	278,786	279,515
Composite Fibers [Member] | Wallcovering [Member]
Disaggregation Of Revenue [Line Items]
Net sales									79,346	81,679	103,686
Composite Fibers [Member] | Technical Specialties [Member]
Disaggregation Of Revenue [Line Items]
Net sales									84,320	79,535	81,281
Composite Fibers [Member] | Metallized [Member]
Disaggregation Of Revenue [Line Items]
Net sales									38,902	46,392	52,174
Composite Fibers [Member] | Composite Laminates [Member]
Disaggregation Of Revenue [Line Items]
Net sales									36,856	35,274	38,213
Airlaid Materials [Member]
Disaggregation Of Revenue [Line Items]
Net sales									391,409	406,007	311,417
Airlaid Materials [Member] | Europe, Middle East and Africa [Member]
Disaggregation Of Revenue [Line Items]
Net sales									204,728	220,924	163,157
Airlaid Materials [Member] | Americas [Member]
Disaggregation Of Revenue [Line Items]
Net sales									174,606	179,067	144,913
Airlaid Materials [Member] | Asia Pacific [Member]
Disaggregation Of Revenue [Line Items]
Net sales									12,075	6,016	3,347
Airlaid Materials [Member] | Feminine Hygiene [Member]
Disaggregation Of Revenue [Line Items]
Net sales									204,085	207,301	195,686
Airlaid Materials [Member] | Specialty Wipes [Member]
Disaggregation Of Revenue [Line Items]
Net sales									74,942	70,149	45,375
Airlaid Materials [Member] | Tabletop [Member]
Disaggregation Of Revenue [Line Items]
Net sales									45,314	66,486	21,600
Airlaid Materials [Member] | Adult Incontinence [Member]
Disaggregation Of Revenue [Line Items]
Net sales									21,825	25,233	19,734
Airlaid Materials [Member] | Home Care [Member]
Disaggregation Of Revenue [Line Items]
Net sales									25,040	17,266	16,010
Airlaid Materials [Member] | Other [Member]
Disaggregation Of Revenue [Line Items]
Net sales									$ 20,203	$ 19,572	$ 13,012