Segment Information (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($) GT	Jun. 30, 2021 USD ($) GT	Jun. 30, 2022 USD ($) T	Jun. 30, 2021 USD ($) T
Segment Reporting Information [Line Items]
Net Sales	$ 363,963	$ 244,911	$ 745,643	$ 470,585
Operating income (loss)	8,924	8,123	(106,965)	25,442
Depreciation and amortization	16,452	14,733	34,936	28,466
Capital expenditures	$ 10,349	$ 5,832	$ 22,697	$ 11,211
Tons shipped (metric)	84,285	68,786	176,284	131,790
Other and unallocated
Segment Reporting Information [Line Items]
Operating income (loss)	$ (6,991)	$ (11,371)	$ (133,194)	$ (17,314)
Depreciation and amortization	1,169	966	2,591	1,870
Capital expenditures	2,353	1,653	3,021	2,520
Composite Fibers
Segment Reporting Information [Line Items]
Net Sales	$ 123,338	$ 141,598	$ 259,167	$ 282,847
Tons shipped (metric)	24,246	34,471	52,457	68,611
Composite Fibers | Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	$ 5,779	$ 11,063	$ 5,444	$ 27,128
Depreciation and amortization	4,796	7,000	11,315	13,981
Capital expenditures	4,131	2,882	10,258	5,655
Airlaid Materials
Segment Reporting Information [Line Items]
Net Sales	$ 143,708	$ 103,313	$ 293,172	$ 187,738
Tons shipped (metric)	40,681	34,315	83,733	63,179
Airlaid Materials | Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	$ 11,944	$ 8,431	$ 24,165	$ 15,628
Depreciation and amortization	7,542	6,767	15,171	12,615
Capital expenditures	2,064	1,297	5,532	3,036
Spunlace
Segment Reporting Information [Line Items]
Net Sales	$ 96,917	$ 0	$ 193,304	$ 0
Tons shipped (metric)	19,358	0	40,094	0
Spunlace | Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	$ (1,808)	$ 0	$ (3,380)	$ 0
Depreciation and amortization	2,945	0	5,859	0
Capital expenditures	$ 1,801	$ 0	$ 3,886	$ 0