Represents the amount of construction obligation completed.

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Represents the amount of construction obligation yet to be completed.

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Represents the term of grant funds.

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No definition available.

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Represents the amount of grant funds awarded.

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No definition available.

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Represents the amount of grant funds cancelled.

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Represents the amount of cumulative grant funds awarded.

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Amount of grant funds expected to be awarded.

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Represents the amount of grants received for the construction of assets which are recognized as a reduction of the cost of fixed assets, a reduction of depreciation expense over the useful lives of the assets, and as a reduction of capital expenditures.

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No definition available.

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Represents the amount of grants received that offset operating costs.

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Represents the initial license period subject to meeting substantial performance requirements.

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No definition available.

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N/a

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Number of fund disbursement programs to telecommunication providers.

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No definition available.

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Number of households to receive broadband coverage.

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No definition available.

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Carrying amount as of the balance sheet date of amounts due under the terms of governmental, corporate, or foundation grants.

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The cash outflow to acquire asset without physical form usually arising from contractual or other legal rights, excluding goodwill.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS (Details) $ in Thousands	3 Months Ended			12 Months Ended
	Mar. 31, 2022 USD ($) item	Mar. 31, 2021 USD ($)	Sep. 30, 2020 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($) item	Jul. 31, 2021 USD ($)	Jun. 30, 2021 USD ($)
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Revenue	$ 172,019	$ 124,510
Communication services
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Revenue	166,543	110,636
USF and CAF II Programs \| Communication services
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Revenue	16,193	8,432
USF and CAF II Programs \| US Telecom \| Communication services
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Revenue	13,432	4,342
USF and CAF II Programs \| International Telecom \| Communication services
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Revenue	$ 2,761	4,090
Universal Service Fund programs
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Number of fund disbursement programs \| item	4
High cost support program \| Communication services
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Revenue	$ 3,817	4,401
High cost support program \| US Telecom \| Communication services
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Revenue	1,056	311
High cost support program \| International Telecom \| Communication services
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Revenue	2,761	4,090
CAF II \| Grant receivable through December 2025
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Grants Receivable	27,700
CAF II \| Grant receivable from January 2026 through July 2028
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Grants Receivable	8,000
CAF II \| Communication services
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Revenue	6,822	1,899
CAF II \| US Telecom \| Communication services
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Revenue	6,822	1,899
Network Connectivity for Eligible Communities
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Cumulative Grant Fund Awards	28,300			$ 27,900
Grant funds awarded during the period	400
Grants cancelled	2,100
Construction obligation completed	15,000
Construction obligation yet to be completed	11,200
CARES Act
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Cumulative Grant Fund Awards					$ 16,300
Grant funds awarded during the period				2,400
Grant funds used to offset fixed asset related costs				18,400
Grant funds used to offset operating expenses				$ 300
CBRS Auction
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Initial term of licenses			10 years
Payment for PALs			$ 20,400
Other Programs \| Communication services
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Revenue	5,554	2,132
Other Programs \| US Telecom \| Communication services
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Revenue	5,554	$ 2,132
Vija's annual USF support
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Grants Receivable						$ 10,900	$ 16,400
Vija's annual USF support \| Grant Receivable June 2022 Through June 2023
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Grants Receivable	5,500
RDOF
GOVERNMENT SUPPORT AND SPECTRUM PROGRAMS
Revenue	$ 500
Grant funds expected to be awarded					$ 20,100
Grant fund term					10 years
Number of households to receive broadband coverage \| item					10,000