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ACQUISITIONS AND DISPOSITIONS - Acquisition of Alaska Communications (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jul. 22, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Jun. 30, 2022 | Dec. 31, 2021
Business Acquisition [Line Items] |  |  |  |  |  |  |
Cash and restricted cash acquired |  |  |  |  | $ 11,900 |  |
Redeemable noncontrolling interests |  | $ 76,398 | $ 71,820 | $ 76,398 | 71,820 | $ 75,206 | $ 72,936
Contingent consideration paid for business acquisition |  |  |  | 1,718 |  |  |
Amount drawn from revolving credit facility |  |  |  | 12,225 | 27,540 |  |
Revenue |  | 182,213 | 166,760 | 533,730 | 415,135 |  |
Income (Loss) from Continuing Operations before Income Taxes |  | (2,132) | (4,763) | (6,415) | 1,554 |  |
Transaction-related charges |  | 3,416 | 5,696 | 4,381 | 7,823 |  |
Redeemable Common Units |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Redeemable noncontrolling interests |  | 22,640 | 22,640 | 22,640 | 22,640 | 22,640 | 22,640
Redeemable Preferred Units |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Redeemable noncontrolling interests |  | 53,758 | $ 49,180 | 53,758 | $ 49,180 | $ 52,566 | $ 50,296
Alaska communications |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
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 |  | 5,500 |  | 5,500 |  |  |
Accrued consideration | $ 1,900 |  |  |  |  |  |
Contingent consideration paid for business acquisition |  |  |  | 1,700 |  |  |
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 |  | 63,500 |  | 184,400 |  |  |
Income (Loss) from Continuing Operations before Income Taxes |  | 3,200 |  | 8,300 |  |  |
Transaction-related charges | 11,200 |  |  | 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 |  | $ 53,800 |  | $ 53,800 |  |  |
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] |  |  |  |  |  |  |
Debt issuance and debt discount costs | 10,000 |  |  |  |  |  |
Amount drawn from revolving credit facility | $ 63,000 |  |  |  |  |  |

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