BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Summary of estimated useful lives (Details)	12 Months Ended
	Dec. 31, 2020
Minimum | Land improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment useful life	15 years
Minimum | Buildings and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment useful life	3 years
Minimum | Furniture, fixtures and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment useful life	2 years
Maximum | Land improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment useful life	18 years
Maximum | Buildings and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment useful life	44 years
Maximum | Furniture, fixtures and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment useful life	10 years