GOODWILL AND OTHER INTANGIBLE ASSETS - Impairment Charges (Details) - USD ($) $ in Thousands	3 Months Ended			12 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Impairment of goodwill	$ 48,671	$ 48,700	$ 63,000	$ 48,671	$ 63,000
Impairment of other long-lived assets	12,438
Total impairments	61,109			61,109	64,206	$ 0
Performance Materials
Finite-Lived Intangible Assets [Line Items]
Impairment of goodwill	48,671		$ 63,000	48,671	63,000
Impairment of other long-lived assets	12,438	12,400			1,200
Total impairments	61,109
Technical Nonwovens
Finite-Lived Intangible Assets [Line Items]
Impairment of goodwill	0	$ 0		$ 0	$ 0
Impairment of other long-lived assets	0
Total impairments	0
Thermal Acoustical Solutions
Finite-Lived Intangible Assets [Line Items]
Impairment of goodwill	0
Impairment of other long-lived assets	0
Total impairments	$ 0