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ACQUISITIONS AND DISPOSITIONS - Acquisition of Alaska Communications (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jul. 22, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Mar. 31, 2022 | Dec. 31, 2021
Business Acquisition [Line Items] |  |  |  |  |  |  |
Redeemable noncontrolling interests |  | $ 75,206 |  | $ 75,206 |  | $ 74,052 | $ 72,936
Amount drawn from revolving credit facility |  |  |  | 8,000 | $ 17,582 |  |
Revenue |  | 179,497 | $ 123,865 | 351,517 | 248,375 |  |
Income (Loss) from Continuing Operations before Income Taxes |  | (5,280) | 1,748 | (4,283) | 6,318 |  |
Transaction-related charges |  | 412 | $ 1,396 | 966 | $ 2,126 |  |
Redeemable Common Units |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Redeemable noncontrolling interests |  | 22,640 |  | 22,640 |  | 22,640 | 22,640
Redeemable Preferred Units |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Redeemable noncontrolling interests |  | 52,566 |  | 52,566 |  | $ 51,412 | $ 50,296
Alaska communications |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Price of common share | $ 3.40 |  |  |  |  |  |
Consideration Transferred | $ 353,280 |  |  |  |  |  |
Cash consideration | 339,500 |  |  |  |  |  |
Cash and restricted cash acquired | $ 11,900 |  |  |  |  |  |
Percentage of additional equity interest | 3.00% |  |  |  |  |  |
Original issue price |  |  |  | 48,300 |  |  |
Accrued preferred dividend |  | 4,300 |  | 4,300 |  |  |
Accrued consideration | $ 1,900 |  |  |  |  |  |
Payment for purchase of Alaska Communications equity | 186,800 |  |  |  |  |  |
Repayment of Alaska Communications debt | 164,600 |  |  |  |  |  |
Mezzanine equity contribution received from Freedom 3 Investors | $ 71,500 |  |  |  |  |  |
Percentage of voting interest | 52.00% |  |  |  |  |  |
Deferred revenue from long term customer contracts | $ 81,500 |  |  |  |  |  |
Revenue |  | 62,600 |  | 120,900 |  |  |
Income (Loss) from Continuing Operations before Income Taxes |  | (1,500) |  | (4,300) |  |  |
Transaction-related charges | 11,200 | 200 |  | 800 |  |  |
Alaska communications | Warrant for redeemable common unit |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Warrants value | 600 | 600 |  | 600 |  |  |
Alaska communications | Customer relationships |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Intangible assets | $ 34,900 |  |  |  |  |  |
Alaska communications | Customer relationships | Minimum |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Intangible assets useful lives | 5 years |  |  |  |  |  |
Alaska communications | Customer relationships | Maximum |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Intangible assets useful lives | 15 years |  |  |  |  |  |
Alaska communications | Trade name licenses |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Intangible assets | $ 9,500 |  |  |  |  |  |
Alaska communications | Trade name licenses | Minimum |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Intangible assets useful lives | 5 years |  |  |  |  |  |
Alaska communications | Trade name licenses | Maximum |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Intangible assets useful lives | 15 years |  |  |  |  |  |
Alaska communications | Telecommunication Equipment | Minimum |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Discounted rate used for cash flows (as a percent) | 4.00% |  |  |  |  |  |
Useful life | 2 years |  |  |  |  |  |
Alaska communications | Telecommunication Equipment | Maximum |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Discounted rate used for cash flows (as a percent) | 14.00% |  |  |  |  |  |
Useful life | 30 years |  |  |  |  |  |
Alaska communications | Redeemable Common Units |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Redeemable noncontrolling interests | $ 22,600 | 22,600 |  | 22,600 |  |  |
Fair value of units |  | 22,600 |  | 22,600 |  |  |
Alaska communications | Redeemable Preferred Units |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Redeemable noncontrolling interests | $ 48,300 | 48,300 |  | 48,300 |  |  |
Fair value of units |  | $ 52,600 |  | $ 52,600 |  |  |
Percentage of preferred dividend | 9.00% | 9.00% |  |  |  |  |
Alaska credit facility | Alaska communications |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Principal amount | $ 283,000 |  |  |  |  |  |
Debt issuance and debt discount costs | 6,600 |  |  |  |  |  |
Alaska Term Loan | Alaska communications |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Principal amount | 210,000 |  |  |  |  |  |
Alaska revolving facility | Alaska communications |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Principal amount | 10,000 |  |  |  |  |  |
Amount drawn from revolving credit facility | $ 63,000 |  |  |  |  |  |

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