GOVERNMENT SUPPORT AND SPECTRUM MATTERS (Details) $ in Thousands		1 Months Ended	12 Months Ended
	Jul. 15, 2022 USD ($)	Apr. 30, 2023 USD ($)	Dec. 31, 2023 USD ($) item	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Jul. 31, 2022 USD ($)	Jul. 31, 2021 USD ($)	Jun. 30, 2021 USD ($)
Mobility Fund [Line Items]
Revenue from contract with customer			$ 709,880	$ 677,953	$ 565,541
Reimbursable capital expenditures			32,871	7,905	9,700
Amounts accrued for reimbursable capital expenditures from government capital programs			31,769
Government capital programs - Amounts received			31,873	2,853	7,517
Payment for PALs				1,068
USF, CAF II, RDOF and Other Programs | Communication services
Mobility Fund [Line Items]
Revenue from contract with customer			107,592	68,247	46,649
USF, CAF II, RDOF and Other Programs | US Telecom | Communication services
Mobility Fund [Line Items]
Revenue from contract with customer			100,771	60,333	32,742
USF, CAF II, RDOF and Other Programs | International Telecom | Communication services
Mobility Fund [Line Items]
Revenue from contract with customer			$ 6,821	7,914	13,907
Universal Service Fund programs
Mobility Fund [Line Items]
Number Of Fund Disbursement Programs | item			4
Grant received per year		$ 5,500
High cost support program | Communication services
Mobility Fund [Line Items]
Revenue from contract with customer			$ 14,831	12,321	16,356
High cost support program | US Telecom | Communication services
Mobility Fund [Line Items]
Revenue from contract with customer			9,260	4,459	2,449
High cost support program | International Telecom | Communication services
Mobility Fund [Line Items]
Revenue from contract with customer			5,571	7,862	13,907
CAF II | Grant receivable through December 2025
Mobility Fund [Line Items]
Amount that has been funded or will be funded			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
CAF II | Communication services
Mobility Fund [Line Items]
Revenue from contract with customer			27,260	27,264	16,330
CAF II | US Telecom | Communication services
Mobility Fund [Line Items]
Revenue from contract with customer			27,260	27,264	16,330
TBCP
Mobility Fund [Line Items]
Grant funds awarded during the period			192,600
Vija's annual USF support
Mobility Fund [Line Items]
Amount that has been funded or will be funded							$ 10,900	$ 16,400
Vija's annual USF support | Grant Receivable July 2022 Through June 2023
Mobility Fund [Line Items]
Amount that has been funded or will be funded						$ 5,500
RDOF
Mobility Fund [Line Items]
Grant Funds Expected To Be Awarded			$ 22,700
Grant Fund Term			10 years
Number Of Households To Receive Broadband Coverage | item			10,000
RDOF | Communication services
Mobility Fund [Line Items]
Revenue from contract with customer			$ 2,432	1,954
RDOF | US Telecom | Communication services
Mobility Fund [Line Items]
Revenue from contract with customer			2,432	1,954
ECF | Communication services
Mobility Fund [Line Items]
Revenue from contract with customer			26,346
ECF | US Telecom | Communication services
Mobility Fund [Line Items]
Revenue from contract with customer			26,346
RHC | Communication services
Mobility Fund [Line Items]
Revenue from contract with customer			11,995	11,018	5,778
RHC | US Telecom | Communication services
Mobility Fund [Line Items]
Revenue from contract with customer			11,995	11,018	5,778
Other Programs | Communication services
Mobility Fund [Line Items]
Revenue from contract with customer			24,728	15,690	8,185
Other Programs | US Telecom | Communication services
Mobility Fund [Line Items]
Revenue from contract with customer			23,478	15,638	$ 8,185
Other Programs | International Telecom | Communication services
Mobility Fund [Line Items]
Revenue from contract with customer			1,250	$ 52
Remove And Replace Program
Mobility Fund [Line Items]
Amount that has been funded or will be funded			47,300
Amount of cost reimbursement allocated	$ 207,000
Reimbursement period	1 year
Capital expenditure incurred to date	$ 17,500
Capital expenditure incurred within twelve months			15,700
Capital expenditure accrued			31,800
Proceeds from grant funds awarded			17,100
Proceeds from grant funds awarded classified as operating cash inflows			4,300
Proceeds from grant funds awarded classified as investing cash inflows			12,800
Network Connectivity for Eligible Communities
Mobility Fund [Line Items]
Grant funds awarded during the period			$ 34,526