Revenue - Summary of Disaggregated Information Pertaining to Net Sales (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation Of Revenue [Line Items]
Net sales	$ 233,473	$ 232,515	$ 681,216	$ 696,701
Product [Member]
Disaggregation Of Revenue [Line Items]
Net sales	233,473	232,515	681,216	696,701
Composite Fibers [Member]
Disaggregation Of Revenue [Line Items]
Net sales	132,419	127,704	387,267	389,002
Composite Fibers [Member] | Europe, Middle East and Africa [Member]
Disaggregation Of Revenue [Line Items]
Net sales	82,032	77,012	230,434	234,928
Composite Fibers [Member] | Americas [Member]
Disaggregation Of Revenue [Line Items]
Net sales	31,583	33,179	97,656	98,783
Composite Fibers [Member] | Asia Pacific [Member]
Disaggregation Of Revenue [Line Items]
Net sales	18,804	17,513	59,177	55,291
Composite Fibers [Member] | Food & Beverage [Member]
Disaggregation Of Revenue [Line Items]
Net sales	68,593	66,637	213,074	208,480
Composite Fibers [Member] | Wallcovering [Member]
Disaggregation Of Revenue [Line Items]
Net sales	24,695	20,673	55,847	62,181
Composite Fibers [Member] | Technical Specialties [Member]
Disaggregation Of Revenue [Line Items]
Net sales	22,517	20,301	61,340	58,855
Composite Fibers [Member] | Composite Laminates [Member]
Disaggregation Of Revenue [Line Items]
Net sales	8,640	8,859	26,529	26,552
Composite Fibers [Member] | Metallized [Member]
Disaggregation Of Revenue [Line Items]
Net sales	7,974	11,234	30,477	32,934
Airlaid Materials [Member]
Disaggregation Of Revenue [Line Items]
Net sales	101,054	104,811	293,949	307,699
Airlaid Materials [Member] | Europe, Middle East and Africa [Member]
Disaggregation Of Revenue [Line Items]
Net sales	52,835	58,279	151,434	167,924
Airlaid Materials [Member] | Americas [Member]
Disaggregation Of Revenue [Line Items]
Net sales	44,141	45,039	133,789	134,634
Airlaid Materials [Member] | Asia Pacific [Member]
Disaggregation Of Revenue [Line Items]
Net sales	4,078	1,493	8,726	5,141
Airlaid Materials [Member] | Feminine Hygiene [Member]
Disaggregation Of Revenue [Line Items]
Net sales	53,463	52,159	154,227	158,998
Airlaid Materials [Member] | Specialty Wipes [Member]
Disaggregation Of Revenue [Line Items]
Net sales	17,929	17,994	56,088	52,982
Airlaid Materials [Member] | Tabletop [Member]
Disaggregation Of Revenue [Line Items]
Net sales	12,445	19,179	33,026	48,857
Airlaid Materials [Member] | Adult Incontinence [Member]
Disaggregation Of Revenue [Line Items]
Net sales	5,255	5,855	16,411	17,708
Airlaid Materials [Member] | Home Care [Member]
Disaggregation Of Revenue [Line Items]
Net sales	7,121	4,857	18,611	13,173
Airlaid Materials [Member] | Other [Member]
Disaggregation Of Revenue [Line Items]
Net sales	$ 4,841	$ 4,767	$ 15,586	$ 15,981