SEGMENT INFORMATION (Details) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2024 USD ($) T	Jun. 30, 2023 USD ($) T	Jun. 30, 2024 USD ($) T	Jun. 30, 2023 USD ($) T	Dec. 31, 2023 USD ($)
Segment Reporting Information [Line Items]
Net Sales	$ 329,443	$ 357,005	$ 656,699	$ 735,213	$ 1,400,000
Operating income (loss)	7,294	(10,485)	5,749	(4,372)
Depreciation and amortization	15,542	15,970	31,296	31,701
Capital expenditures	$ 5,690	$ 7,958	$ 13,172	$ 17,458
Tons shipped (metric) | T	79,138	79,403	158,235	160,468
Operating Segments | Airlaid Material
Segment Reporting Information [Line Items]
Net Sales	$ 130,584	$ 152,511	$ 262,113	$ 311,952
Operating income (loss)	7,505	9,726	12,463	23,640
Depreciation and amortization	7,602	7,637	15,266	15,323
Capital expenditures	$ 1,571	$ 2,332	$ 3,662	$ 4,414
Tons shipped (metric) | T	37,795	39,246	76,136	79,073
Operating Segments | Composite Fibers
Segment Reporting Information [Line Items]
Net Sales	$ 117,215	$ 125,725	$ 233,365	$ 258,316
Operating income (loss)	6,031	898	14,290	7,025
Depreciation and amortization	3,664	3,897	7,428	7,862
Capital expenditures	$ 2,409	$ 2,110	$ 6,073	$ 5,773
Tons shipped (metric) | T	25,735	24,966	50,737	49,784
Operating Segments | Spunlace
Segment Reporting Information [Line Items]
Net Sales	$ 82,197	$ 79,420	$ 162,327	$ 166,143
Operating income (loss)	2,260	(1,314)	5,024	(3,337)
Depreciation and amortization	3,327	3,476	6,700	6,568
Capital expenditures	$ 1,388	$ 2,509	$ 2,766	$ 5,210
Tons shipped (metric) | T	15,937	15,191	32,028	31,611
Inter-segment sales elimination
Segment Reporting Information [Line Items]
Net Sales	$ (553)	$ (651)	$ (1,106)	$ (1,198)
Tons shipped (metric) | T	(329)	0	(666)	0
Other and unallocated
Segment Reporting Information [Line Items]
Operating income (loss)	$ (8,502)	$ (19,795)	$ (26,028)	$ (31,700)
Depreciation and amortization	949	960	1,902	1,948
Capital expenditures	$ 322	$ 1,007	$ 671	$ 2,061