SEGMENT INFORMATION (Details) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2024 USD ($) T	Sep. 30, 2023 USD ($) T	Sep. 30, 2024 USD ($) T	Sep. 30, 2023 USD ($) T	Dec. 31, 2023 USD ($)
Segment Reporting Information [Line Items]
Net Sales	$ 332,101	$ 329,921	$ 988,800	$ 1,065,134	$ 1,400,000
Operating income (loss)	2,971	2,653	8,720	(1,719)
Depreciation and amortization	15,829	15,693	47,125	47,394
Capital expenditures	$ 8,523	$ 7,771	$ 21,695	$ 25,229
Tons shipped (metric) | T	76,466	76,372	234,701	236,243
Operating Segments | Airlaid Material
Segment Reporting Information [Line Items]
Net Sales	$ 138,306	$ 147,014	$ 400,419	$ 458,966
Operating income (loss)	10,343	11,196	22,806	34,836
Depreciation and amortization	7,656	7,553	22,922	22,876
Capital expenditures	$ 3,286	$ 2,625	$ 6,948	$ 7,039
Tons shipped (metric) | T	39,069	40,076	115,205	119,149
Operating Segments | Composite Fibers
Segment Reporting Information [Line Items]
Net Sales	$ 113,689	$ 109,715	$ 347,054	$ 368,031
Operating income (loss)	6,292	7,268	20,582	14,293
Depreciation and amortization	3,810	3,898	11,238	11,760
Capital expenditures	$ 2,540	$ 2,579	$ 8,613	$ 8,352
Tons shipped (metric) | T	22,862	22,188	73,599	71,972
Operating Segments | Spunlace
Segment Reporting Information [Line Items]
Net Sales	$ 80,443	$ 73,791	$ 242,770	$ 239,934
Operating income (loss)	1,324	(1,053)	6,348	(4,390)
Depreciation and amortization	3,447	3,289	10,147	9,857
Capital expenditures	$ 2,198	$ 2,271	$ 4,964	$ 7,481
Tons shipped (metric) | T	14,699	14,436	46,727	46,047
Inter-segment sales elimination
Segment Reporting Information [Line Items]
Net Sales	$ (337)	$ (599)	$ (1,443)	$ (1,797)
Tons shipped (metric) | T	(164)	(328)	(830)	(925)
Other and unallocated
Segment Reporting Information [Line Items]
Operating income (loss)	$ (14,988)	$ (14,758)	$ (41,016)	$ (46,458)
Depreciation and amortization	916	953	2,818	2,901
Capital expenditures	$ 499	$ 296	$ 1,170	$ 2,357