IMPACT OF THE INVASION OF UKRAINE (Narrative) (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Mar. 04, 2022
Unusual or Infrequent Item, or Both [Line Items]
Property and equipment, net		$ 273,348,000	$ 236,214,000	$ 169,533,000
Operating lease right-of-use assets, net		148,780,000	184,841,000
Commitments related to operating lease agreements that have not yet commenced		15,700,000
Impairment charges		23,619,000	144,000	0
Impairment, long-lived asset, held-for-use, statement of income or comprehensive income	Selling, general and administrative expenses
Goodwill, Impairment Loss		(686,000)
Bad debt expense		12,394,000	2,488,000	2,253,000
Humanitarian Commitment
Unusual or Infrequent Item, or Both [Line Items]
Nonoperating expense		44,800,000
Humanitarian Commitment | Cost of revenues (exclusive of depreciation and amortization)
Unusual or Infrequent Item, or Both [Line Items]
Nonoperating expense		29,000,000
Humanitarian Commitment | Selling, general and administrative expenses
Unusual or Infrequent Item, or Both [Line Items]
Nonoperating expense		15,800,000
Ukraine
Unusual or Infrequent Item, or Both [Line Items]
Property and equipment, net		70,183,000	78,289,000	30,980,000
Operating lease right-of-use assets, net		12,300,000
Ukraine | Cost of revenues (exclusive of depreciation and amortization)
Unusual or Infrequent Item, or Both [Line Items]
Standby resources expense		14,700,000
Ukraine | Selling, general and administrative expenses
Unusual or Infrequent Item, or Both [Line Items]
Standby resources expense		38,700,000
Ukraine | Other Income/(Expense)
Unusual or Infrequent Item, or Both [Line Items]
Impairment charges		1,300,000
Ukraine | Humanitarian Commitment
Unusual or Infrequent Item, or Both [Line Items]
Commitments related to operating lease agreements that have not yet commenced					$ 100,000,000
Russia
Unusual or Infrequent Item, or Both [Line Items]
Property and equipment, net		0	$ 16,611,000	$ 15,036,000
Impairment of property, plant and equipment	$ 15,100,000
Operating lease, impairment loss	3,800,000
Goodwill, Impairment Loss	$ (700,000)
Bad debt expense		5,100,000
Russia | Employee Severance
Unusual or Infrequent Item, or Both [Line Items]
Exit costs		17,100,000
Building | Ukraine
Unusual or Infrequent Item, or Both [Line Items]
Property and equipment, net		70,200,000
Construction in Progress | Ukraine
Unusual or Infrequent Item, or Both [Line Items]
Property and equipment, net		51,400,000
Computer Equipment | Ukraine
Unusual or Infrequent Item, or Both [Line Items]
Property and equipment, net		11,500,000
Furniture and Fixtures | Ukraine
Unusual or Infrequent Item, or Both [Line Items]
Property and equipment, net		6,300,000
Leasehold Improvements | Ukraine
Unusual or Infrequent Item, or Both [Line Items]
Property and equipment, net		$ 1,000,000