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GOVERNMENT SUPPORT AND SPECTRUM MATTERS (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2024 USD ($) | Sep. 30, 2023 USD ($) | Sep. 30, 2024 USD ($) item | Sep. 30, 2023 USD ($) | Jul. 15, 2022 USD ($)
Mobility Fund [Line Items] |  |  |  |  |
Revenue from contract with customer | $ 164,602 | $ 177,979 | $ 506,876 | $ 523,975 |
Reimbursable capital expenditures |  |  | 71,849 | 14,261 |
Amounts accrued for reimbursable capital expenditures from government capital programs |  |  | 32,467 | 25,244 |
Gain (loss) on disposition of long-lived assets | (1,504) | (132) | 14,919 | (410) |
Government capital programs - Amounts received |  |  | 72,531 | 16,065 |
USF, CAF II, RDOF, EOF, RHC and Other Programs | Communication services |  |  |  |  |
Mobility Fund [Line Items] |  |  |  |  |
Revenue from contract with customer | 18,104 | 25,930 | 64,999 | 78,324 |
USF, CAF II, RDOF, EOF, RHC and Other Programs | US Telecom | Communication services |  |  |  |  |
Mobility Fund [Line Items] |  |  |  |  |
Revenue from contract with customer | 16,707 | 24,528 | 60,346 | 74,118 |
USF, CAF II, RDOF, EOF, RHC and Other Programs | International Telecom | Communication services |  |  |  |  |
Mobility Fund [Line Items] |  |  |  |  |
Revenue from contract with customer | 1,397 | 1,402 | $ 4,653 | 4,206 |
Universal Service Fund programs |  |  |  |  |
Mobility Fund [Line Items] |  |  |  |  |
Number of fund disbursement programs | item |  |  | 4 |  |
High cost support program | Communication services |  |  |  |  |
Mobility Fund [Line Items] |  |  |  |  |
Revenue from contract with customer | 4,867 | 3,685 | $ 14,591 | 11,196 |
High cost support program | US Telecom | Communication services |  |  |  |  |
Mobility Fund [Line Items] |  |  |  |  |
Revenue from contract with customer | 3,473 | 2,288 | 10,411 | 7,004 |
High cost support program | International Telecom | Communication services |  |  |  |  |
Mobility Fund [Line Items] |  |  |  |  |
Revenue from contract with customer | 1,394 | 1,397 | 4,180 | 4,192 |
Government capital programs - Amounts received |  |  | 5,500 |  |
CAF II | Grant receivable through December 2025 |  |  |  |  |
Mobility Fund [Line Items] |  |  |  |  |
Amount that has been funded or will be funded | 27,700 |  | 27,700 |  |
CAF II | Grant receivable from January 2026 through July 2028 |  |  |  |  |
Mobility Fund [Line Items] |  |  |  |  |
Amount that has been funded or will be funded | 8,000 |  | 8,000 |  |
CAF II | Communication services |  |  |  |  |
Mobility Fund [Line Items] |  |  |  |  |
Revenue from contract with customer | 6,731 | 6,815 | 20,303 | 20,445 |
CAF II | US Telecom | Communication services |  |  |  |  |
Mobility Fund [Line Items] |  |  |  |  |
Revenue from contract with customer | 6,731 | 6,815 | 20,303 | 20,445 |
E-ACAM |  |  |  |  |
Mobility Fund [Line Items] |  |  |  |  |
Amount that has been funded or will be funded | 118,200 |  | $ 118,200 |  |
Grant fund term |  |  | 15 years |  |
E-ACAM | Grant receivable from 2024 through 2030 |  |  |  |  |
Mobility Fund [Line Items] |  |  |  |  |
Amount that has been funded or will be funded | 9,000 |  | $ 9,000 |  |
E-ACAM | Grant receivable in year 2038 |  |  |  |  |
Mobility Fund [Line Items] |  |  |  |  |
Amount that has been funded or will be funded | 6,000 |  | 6,000 |  |
TBCP and Reconnect |  |  |  |  |
Mobility Fund [Line Items] |  |  |  |  |
Grant funds awarded during the period |  |  | 192,600 |  |
Government capital programs - Amounts received |  |  | 15,900 |  |
Construction Obligation |  |  | 16,100 |  |
RDOF |  |  |  |  |
Mobility Fund [Line Items] |  |  |  |  |
Grant funds expected to be awarded | 22,700 |  | $ 22,700 |  |
Grant fund term |  |  | 10 years |  |
Number of households to receive broadband coverage | item |  |  | 10,000 |  |
Transfer of obligation under pending approval of regulatory | 13,000 |  | $ 13,000 |  |
Gain (loss) on disposition of long-lived assets | 900 |  |  |  |
Accounts payable and accrued liabilities | 2,000 |  | 2,000 |  |
RDOF | Communication services |  |  |  |  |
Mobility Fund [Line Items] |  |  |  |  |
Revenue from contract with customer | 175 | 608 | 465 | 1,824 |
RDOF | US Telecom | Communication services |  |  |  |  |
Mobility Fund [Line Items] |  |  |  |  |
Revenue from contract with customer | 175 | 608 | 465 | 1,824 |
ECF | Communication services |  |  |  |  |
Mobility Fund [Line Items] |  |  |  |  |
Revenue from contract with customer |  | 6,813 | 7,312 | 21,694 |
ECF | US Telecom | Communication services |  |  |  |  |
Mobility Fund [Line Items] |  |  |  |  |
Revenue from contract with customer |  | 6,813 | 7,312 | 21,694 |
RHC | Communication services |  |  |  |  |
Mobility Fund [Line Items] |  |  |  |  |
Revenue from contract with customer | 4,420 | 3,007 | 11,539 | 8,795 |
RHC | US Telecom | Communication services |  |  |  |  |
Mobility Fund [Line Items] |  |  |  |  |
Revenue from contract with customer | 4,420 | 3,007 | 11,539 | 8,795 |
Other Programs | Communication services |  |  |  |  |
Mobility Fund [Line Items] |  |  |  |  |
Revenue from contract with customer | 1,911 | 5,002 | 10,789 | 14,370 |
Other Programs | US Telecom | Communication services |  |  |  |  |
Mobility Fund [Line Items] |  |  |  |  |
Revenue from contract with customer | 1,908 | 4,997 | 10,316 | 14,356 |
Other Programs | International Telecom | Communication services |  |  |  |  |
Mobility Fund [Line Items] |  |  |  |  |
Revenue from contract with customer | $ 3 | $ 5 | $ 473 | $ 14 |
Remove And Replace Program |  |  |  |  |
Mobility Fund [Line Items] |  |  |  |  |
Reimbursement period |  |  | 12 months |  |
Amounts accrued for reimbursable capital expenditures from government capital programs |  |  | $ 31,100 |  |
Remove And Replace Program | Maximum |  |  |  |  |
Mobility Fund [Line Items] |  |  |  |  |
Amount of cost reimbursement allocated |  |  |  |  | $ 207,000
Network Connectivity for Eligible Communities |  |  |  |  |
Mobility Fund [Line Items] |  |  |  |  |
Reimbursable capital expenditures |  |  | 4,700 |  |
Grant funds awarded during the period |  |  | 0 |  |
Government capital programs - Amounts received |  |  | $ 4,100 |  |

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