SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Property and Equipment
Gross property and equipment	$ 850,174	$ 834,425
Less accumulated depreciation and amortization	(263,631)	(253,618)
Property and equipment, net	586,543	580,807
Land
Property and Equipment
Gross property and equipment	32,986	32,986
Land improvements
Property and Equipment
Gross property and equipment	9,898	9,898
Buildings
Property and Equipment
Gross property and equipment	476,070	474,571
Building improvements
Property and Equipment
Gross property and equipment	55,974	55,432
Furniture and equipment
Property and Equipment
Gross property and equipment	243,734	235,233
Construction in progress
Property and Equipment
Gross property and equipment	13,619	8,211
Right of use assets
Property and Equipment
Gross property and equipment	14,045	14,246
Leasehold improvements
Property and Equipment
Gross property and equipment	$ 3,848	$ 3,848

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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