Revenue - Summary of Disaggregated Information Pertaining to Net Sales (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Disaggregation Of Revenue [Line Items]
Net sales	$ 410,647	$ 390,713
Composite Fibers [Member]
Disaggregation Of Revenue [Line Items]
Net sales	141,598	125,103
Composite Fibers [Member] | Europe, Middle East and Africa [Member]
Disaggregation Of Revenue [Line Items]
Net sales	94,782	83,547
Composite Fibers [Member] | Asia Pacific [Member]
Disaggregation Of Revenue [Line Items]
Net sales	22,768	18,497
Composite Fibers [Member] | Americas [Member]
Disaggregation Of Revenue [Line Items]
Net sales	24,048	23,059
Composite Fibers [Member] | Food & Beverage [Member]
Disaggregation Of Revenue [Line Items]
Net sales	70,397	62,602
Composite Fibers [Member] | Wallcovering [Member]
Disaggregation Of Revenue [Line Items]
Net sales	28,132	22,455
Composite Fibers [Member] | Technical Specialties [Member]
Disaggregation Of Revenue [Line Items]
Net sales	20,958	17,707
Composite Fibers [Member] | Composite Laminates [Member]
Disaggregation Of Revenue [Line Items]
Net sales	9,398	8,839
Composite Fibers [Member] | Metallized [Member]
Disaggregation Of Revenue [Line Items]
Net sales	12,713	13,500
Advanced Airlaid Materials [Member]
Disaggregation Of Revenue [Line Items]
Net sales	69,609	59,838
Advanced Airlaid Materials [Member] | Europe, Middle East and Africa [Member]
Disaggregation Of Revenue [Line Items]
Net sales	36,228	29,729
Advanced Airlaid Materials [Member] | Asia Pacific [Member]
Disaggregation Of Revenue [Line Items]
Net sales	566	188
Advanced Airlaid Materials [Member] | Americas [Member]
Disaggregation Of Revenue [Line Items]
Net sales	32,815	29,921
Advanced Airlaid Materials [Member] | Feminine Hygiene [Member]
Disaggregation Of Revenue [Line Items]
Net sales	48,473	42,424
Advanced Airlaid Materials [Member] | Specialty Wipes [Member]
Disaggregation Of Revenue [Line Items]
Net sales	7,767	6,050
Advanced Airlaid Materials [Member] | Adult Incontinence [Member]
Disaggregation Of Revenue [Line Items]
Net sales	4,432	3,644
Advanced Airlaid Materials [Member] | Home Care [Member]
Disaggregation Of Revenue [Line Items]
Net sales	4,027	2,758
Advanced Airlaid Materials [Member] | Other [Member]
Disaggregation Of Revenue [Line Items]
Net sales	4,910	4,962
Specialty Papers [Member]
Disaggregation Of Revenue [Line Items]
Net sales	199,440	205,772
Specialty Papers [Member] | Americas [Member]
Disaggregation Of Revenue [Line Items]
Net sales	197,829	204,774
Specialty Papers [Member] | Other [Member]
Disaggregation Of Revenue [Line Items]
Net sales	1,611	998
Specialty Papers [Member] | Other [Member]
Disaggregation Of Revenue [Line Items]
Net sales	1,156	508
Specialty Papers [Member] | Carbonless & Forms [Member]
Disaggregation Of Revenue [Line Items]
Net sales	71,870	77,072
Specialty Papers [Member] | Engineered Products [Member]
Disaggregation Of Revenue [Line Items]
Net sales	49,951	48,162
Specialty Papers [Member] | Envelope & Converting [Member]
Disaggregation Of Revenue [Line Items]
Net sales	37,905	42,857
Specialty Papers [Member] | Book Publishing [Member]
Disaggregation Of Revenue [Line Items]
Net sales	$ 38,558	$ 37,173