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IMPACT OF THE INVASION OF UKRAINE (Narrative) (Details) - USD ($) | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2023 | Mar. 31, 2022 | Dec. 31, 2022 | Mar. 04, 2022
Unusual or Infrequent Item, or Both [Line Items] |  |  |  |
Property and equipment, net | $ 267,067,000 |  | $ 273,348,000 |
Operating lease, right-of-use asset | 146,815,000 |  | 148,780,000 |
Commitments related to operating lease agreements that have not yet commenced | 14,200,000 |  |  |
Impairment charges | 88,000 | $ 20,401,000 |  |
Bad debt expense | 182,000 | 8,675,000 |  |
Humanitarian Commitment |  |  |  |
Unusual or Infrequent Item, or Both [Line Items] |  |  |  |
Commitments related to operating lease agreements that have not yet commenced | 49,100,000 |  |  |
Nonoperating expense | 6,100,000 | 25,700,000 |  |
Humanitarian Commitment | Cost of revenues (exclusive of depreciation and amortization) |  |  |  |
Unusual or Infrequent Item, or Both [Line Items] |  |  |  |
Nonoperating expense | 2,500,000 | 19,200,000 |  |
Humanitarian Commitment | Selling, general and administrative expenses |  |  |  |
Unusual or Infrequent Item, or Both [Line Items] |  |  |  |
Nonoperating expense | 3,600,000 | 6,500,000 |  |
Ukraine |  |  |  |
Unusual or Infrequent Item, or Both [Line Items] |  |  |  |
Property and equipment, net | 69,290,000 |  | $ 70,183,000 |
Operating lease, right-of-use asset | 11,000,000 |  |  |
Ukraine | Cost of revenues (exclusive of depreciation and amortization) |  |  |  |
Unusual or Infrequent Item, or Both [Line Items] |  |  |  |
Standby resources expense | 7,400,000 | 2,600,000 |  |
Ukraine | Selling, general and administrative expenses |  |  |  |
Unusual or Infrequent Item, or Both [Line Items] |  |  |  |
Standby resources expense | 200,000 | 18,700,000 |  |
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] |  |  |  |
Impairment of property, plant and equipment |  | 15,100,000 |  |
Operating lease, impairment loss |  | 3,800,000 |  |
Goodwill, impairment loss |  | 700,000 |  |
Bad debt expense | (400,000) | $ 8,400,000 |  |
Building | Ukraine |  |  |  |
Unusual or Infrequent Item, or Both [Line Items] |  |  |  |
Property and equipment, net | 51,500,000 |  |  |
Computer Equipment | Ukraine |  |  |  |
Unusual or Infrequent Item, or Both [Line Items] |  |  |  |
Property and equipment, net | 10,500,000 |  |  |
Furniture and Fixtures | Ukraine |  |  |  |
Unusual or Infrequent Item, or Both [Line Items] |  |  |  |
Property and equipment, net | 5,600,000 |  |  |
Leasehold Improvements | Ukraine |  |  |  |
Unusual or Infrequent Item, or Both [Line Items] |  |  |  |
Property and equipment, net | $ 1,700,000 |  |  |

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