PROPERTY, NET - Components of Property (Details) - USD ($) $ in Thousands		9 Months Ended
	Jul. 22, 2024	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		$ 491,351		$ 647,063
Less - Accumulated depreciation and amortization		332,911		414,547
Property, net		158,440		232,516
Proceeds from sale of property		194,283	$ 0
Gain from sale of property		$ 114,271	$ 0
Office Building
Property, Plant and Equipment [Line Items]
Property, net	$ 72,594			72,921
Proceeds from sale of property	194,283
Total lease payments to be received				6,550
Gain from sale of property	$ 114,271
Buildings
Property, Plant and Equipment [Line Items]
Estimated Depreciable Life in Years		33 years
Property, plant and equipment, gross		$ 12,345		170,830
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		$ 217,339		233,732
Leasehold improvements | Minimum
Property, Plant and Equipment [Line Items]
Estimated Depreciable Life in Years		3 years
Leasehold improvements | Maximum
Property, Plant and Equipment [Line Items]
Estimated Depreciable Life in Years		20 years
Furniture and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		$ 168,063		162,075
Furniture and equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated Depreciable Life in Years		3 years
Furniture and equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated Depreciable Life in Years		10 years
Computer software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		$ 68,157		68,638
Computer software | Minimum
Property, Plant and Equipment [Line Items]
Estimated Depreciable Life in Years		3 years
Computer software | Maximum
Property, Plant and Equipment [Line Items]
Estimated Depreciable Life in Years		5 years
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross		$ 25,447		$ 11,788