SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Property and Equipment
Gross property and equipment	$ 920,191	$ 904,436
Less accumulated depreciation and amortization	(342,673)	(323,939)
Property and equipment, net	577,518	580,497
Land
Property and Equipment
Gross property and equipment	34,688	34,688
Land improvements
Property and Equipment
Gross property and equipment	11,082	11,045
Buildings
Property and Equipment
Gross property and equipment	474,724	474,724
Building improvements
Property and Equipment
Gross property and equipment	119,705	100,822
Furniture and equipment
Property and Equipment
Gross property and equipment	246,375	254,486
Construction in progress
Property and Equipment
Gross property and equipment	15,138	9,552
Right of use assets
Property and Equipment
Gross property and equipment	14,234	14,874
Leasehold improvements
Property and Equipment
Gross property and equipment	$ 4,245	$ 4,245