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LONG-TERM DEBT (Details) $ in Thousands					6 Months Ended
	Jul. 13, 2023 USD ($)	Dec. 23, 2022 USD ($)	Jul. 22, 2021 USD ($)	Apr. 10, 2019 USD ($)	Jun. 30, 2023 USD ($) derivative	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)	Nov. 07, 2022 USD ($)	Oct. 22, 2022 USD ($)	Jun. 15, 2022 USD ($)	May 05, 2022	Mar. 26, 2020 USD ($)	Dec. 31, 2016 USD ($)	Jul. 01, 2016 USD ($)
Long-term debt
Outstanding borrowings					$ 528,598		$ 467,248
Current portion of customer receivable credit facility					6,710		$ 6,073
Revolving credit facility - borrowings					$ 88,273	$ 49,000
Alaska credit facility | SOFR
Long-term debt
Percentage of adjustment to applicable interest rate		10.00%
2019 CoBank Credit Facility
Long-term debt
Outstanding debt	$ 138,000
One Communications Debt | Minimum | LIBOR
Long-term debt
Basis spread on variable rate (as a percent)					2.50%
One Communications Debt | Maximum | LIBOR
Long-term debt
Basis spread on variable rate (as a percent)					2.75%
GTT Credit Facility
Long-term debt
Stated interest rate					7.50%
Term of debt					5 years
GTT Term Loan Facility
Long-term debt
Maximum borrowing capacity									$ 2,900
Borrowings outstanding					$ 0
GTT Overdraft Facility
Long-term debt
Maximum borrowing capacity									$ 5,700
Borrowings outstanding					3,800
Viya Debt
Long-term debt
Term loan assumed														$ 60,000
Net leverage ratio											7.0			3.5
Stated interest rate													4.00%	4.00%
Financing costs													$ 900
Outstanding debt					60,000
Unamortized financing costs					300
Revolver loan | 2019 CoBank Credit Facility
Long-term debt
Maximum borrowing capacity				$ 200,000
Repayments of debt	139,500
Remaining borrowing capacity					62,000
Borrowings outstanding					138,000
Revolver loan | 2019 CoBank Credit Facility | Minimum
Long-term debt
Commitment fee (as a percent)				0.15%
Revolver loan | 2019 CoBank Credit Facility | Minimum | LIBOR
Long-term debt
Basis spread on variable rate (as a percent)				1.25%
Revolver loan | 2019 CoBank Credit Facility | Minimum | Base rate
Long-term debt
Basis spread on variable rate (as a percent)				0.25%
Revolver loan | 2019 CoBank Credit Facility | Maximum
Long-term debt
Commitment fee (as a percent)				0.375%
Revolver loan | 2019 CoBank Credit Facility | Maximum | LIBOR
Long-term debt
Basis spread on variable rate (as a percent)				2.25%
Revolver loan | 2019 CoBank Credit Facility | Maximum | Base rate
Long-term debt
Basis spread on variable rate (as a percent)				1.25%
Letter of credit sub-facility
Long-term debt
Borrowings outstanding					31,600
Letter of credit sub-facility | 2019 CoBank Credit Facility
Long-term debt
Maximum borrowing capacity				$ 75,000
Letter of credit sub-facility | 2023 CoBank Credit Facility
Long-term debt
Maximum borrowing capacity	25,000
Swingline sub-facility | 2019 CoBank Credit Facility
Long-term debt
Maximum borrowing capacity				$ 10,000
Base rate before one-week or one-month LIBOR (as a percent)				1.00%
Swingline sub-facility | 2019 CoBank Credit Facility | Federal Funds Effective Rate
Long-term debt
Basis spread on variable rate (as a percent)				0.50%
Swingline sub-facility | 2023 CoBank Credit Facility
Long-term debt
Maximum borrowing capacity	$ 20,000
Base rate before one-week or one-month LIBOR (as a percent)	1.00%
Swingline sub-facility | 2023 CoBank Credit Facility | Federal Funds Effective Rate
Long-term debt
Basis spread on variable rate (as a percent)	0.50%
2023 CoBank Credit Facility | 2023 CoBank Credit Facility | Minimum
Long-term debt
Commitment fee (as a percent)	0.25%
2023 CoBank Credit Facility | 2023 CoBank Credit Facility | Maximum
Long-term debt
Commitment fee (as a percent)	0.50%
2023 CoBank Revolving Loan | 2023 CoBank Credit Facility
Long-term debt
Maximum borrowing capacity	$ 170,000
Term of debt	5 years
Revolving credit facility - borrowings	$ 13,600
2023 CoBank Revolving Loan | 2023 CoBank Credit Facility | Minimum | SOFR
Long-term debt
Basis spread on variable rate (as a percent)	1.75%
2023 CoBank Revolving Loan | 2023 CoBank Credit Facility | Minimum | Base rate
Long-term debt
Basis spread on variable rate (as a percent)	0.75%
2023 CoBank Revolving Loan | 2023 CoBank Credit Facility | Maximum
Long-term debt
Net leverage ratio	3.25
2023 CoBank Revolving Loan | 2023 CoBank Credit Facility | Maximum | SOFR
Long-term debt
Basis spread on variable rate (as a percent)	3.50%
2023 CoBank Revolving Loan | 2023 CoBank Credit Facility | Maximum | Base rate
Long-term debt
Basis spread on variable rate (as a percent)	2.50%
2023 CoBank Term Loan | 2023 CoBank Credit Facility
Long-term debt
Face amount of debt	$ 130,000
Term of debt	6 years
2023 CoBank Term Loan | 2023 CoBank Credit Facility | Minimum | SOFR
Long-term debt
Basis spread on variable rate (as a percent)	2.00%
2023 CoBank Term Loan | 2023 CoBank Credit Facility | Minimum | Base rate
Long-term debt
Basis spread on variable rate (as a percent)	1.00%
2023 CoBank Term Loan | 2023 CoBank Credit Facility | Maximum | SOFR
Long-term debt
Basis spread on variable rate (as a percent)	3.75%
2023 CoBank Term Loan | 2023 CoBank Credit Facility | Maximum | Base rate
Long-term debt
Basis spread on variable rate (as a percent)	2.75%
Senior secured delayed draw term loan | Receivable credit facility
Long-term debt
Remaining borrowing capacity					18,000							$ 75,000
Current portion of customer receivable credit facility					6,700
Financing costs					800
Borrowings outstanding					47,000
Unamortized financing costs					500
Senior secured delayed draw term loan | Sacred Wind Term Debt
Long-term debt
Outstanding borrowings					29,800			$ 31,600
Current portion of customer receivable credit facility					3,200
Non-current portion of customer receivable credit facility					$ 26,600
Interest rate swap | 2019 CoBank Credit Facility
Long-term debt
Number of derivative instruments | derivative					0
Alaska communications | Alaska credit facility
Long-term debt
Fixed charge coverage ratio			1.25
Net total leverage ratio			4.00
Financing costs					$ 7,300
Unamortized financing costs					4,600
Consolidated EBITDA			12 months
Alaska communications | Alaska credit facility | SOFR
Long-term debt
Percentage of adjustment to applicable interest rate			10.00%
Alaska communications | Alaska credit facility | Base rate
Long-term debt
Basis spread on variable rate (as a percent)			1.00%
Alaska communications | Alaska credit facility | Minimum | SOFR
Long-term debt
Basis spread on variable rate (as a percent)			3.00%
Alaska communications | Alaska credit facility | Maximum | SOFR
Long-term debt
Basis spread on variable rate (as a percent)			4.00%
Alaska communications | Revolver loan | Alaska credit facility
Long-term debt
Maximum borrowing capacity		$ 75,000	$ 35,000
Remaining borrowing capacity					56,000
Revolving credit facility - borrowings					19,000
Alaska communications | Term loans | Alaska credit facility
Long-term debt
Outstanding borrowings		$ 230,000	210,000
Borrowings outstanding					230,000
Alaska communications | Secured delayed draw term loan | Alaska credit facility
Long-term debt
Maximum borrowing capacity										$ 7,500
Remaining borrowing capacity					0
Outstanding borrowings					$ 6,800
Stated interest rate										4.00%
Alaska communications | Incremental term loans | Alaska credit facility | Minimum
Long-term debt
Maximum borrowing capacity			$ 70,000
Alaska communications | Designated as cash flow hedges | Interest rate swap
Long-term debt
Interest rate (as a percent)			1.6735%
Number of derivative instruments | derivative					0
Period of fourth quarter of 2023 To third quarter 2024 | Alaska communications | Alaska credit facility
Long-term debt
Periodic payment, principal			$ 1,400
Debt Instrument, From Fourth Quarter of 2024 To Third Quarter of 2026 | Alaska communications | Alaska credit facility
Long-term debt
Periodic payment, principal			$ 2,900
Period of second quarter of 2024 | Alaska communications | Alaska credit facility
Long-term debt
Net total leverage ratio			3.75

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Percentage of adjustment of applicable interest rate.

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Amount, after unamortized (discount) premium and debt issuance costs, of customer receivable credit facility, classified as current.

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Amount, after unamortized (discount) premium and debt issuance costs, of customer receivable credit facility, classified as non-current.

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Percentage of the base rate before addition of LIBOR.

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The debt instrument covenant for net leverage ratio.

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The minimum consolidated fixed charge coverage ratio under the debt instrument covenant.

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Trailing period of consolidated EBITDA under the debt instrument

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The amount of financial liabilities assumed (as defined) which have been recognized as of the acquisition date.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount of the required periodic payments applied to principal.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Fixed interest rate related to the interest rate derivative.

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The number of derivative instruments of a particular group held by the entity.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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