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GOODWILL AND INTANGIBLE ASSETS - Net (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Oct. 01, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | --- | ---
Changes in the carrying amount of goodwill, by operating segment |  |  |  |
Goodwill, Gross | $ 60,691 |  | $ 60,691 |
Accumulated impairment | (20,587) |  | (20,587) |
Goodwill, Total | 40,104 |  | 40,104 | $ 60,691
International Telecom |  |  |  |
Changes in the carrying amount of goodwill, by operating segment |  |  |  |
Goodwill, Gross | 25,423 |  | 25,423 |
Accumulated impairment | (20,587) |  | (20,587) |
Goodwill, Total | 4,836 |  | 4,836 | 25,423
US Telecom |  |  |  |
Changes in the carrying amount of goodwill, by operating segment |  |  |  |
Goodwill, Gross | 35,268 |  | 35,268 |
Goodwill, Total | $ 35,268 | $ 35,300 | $ 35,268 | $ 35,268

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