IMPAIRMENT CHARGES (Impairment charges) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Goodwill [Line Items]
Goodwill impairment		$ 0	$ 0	$ 25,400,000
Other Long-Lived Assets Impairments		0		4,000,000.0
Total Impairments	$ 0	0	$ 0	29,400,000
Bedding Products
Goodwill [Line Items]
Goodwill impairment		0		0
Other Long-Lived Assets Impairments		0		300,000
Total Impairments		0		300,000
Specialized Products
Goodwill [Line Items]
Goodwill impairment		0		25,400,000
Other Long-Lived Assets Impairments		0		0
Total Impairments		0		25,400,000
Furniture, Flooring & Textile Products
Goodwill [Line Items]
Goodwill impairment		0		0
Other Long-Lived Assets Impairments		0		200,000
Total Impairments		0		200,000
Unallocated
Goodwill [Line Items]
Goodwill impairment		0		0
Other Long-Lived Assets Impairments		0		3,500,000
Total Impairments		$ 0		$ 3,500,000