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Note 5 - Equity Investments (Details Textual) - USD ($) $ in Thousands |  |  |  |  |  |  |  |  |  |  |  | 3 Months Ended | 9 Months Ended | 27 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 06, 2022 | Jun. 01, 2022 | Apr. 01, 2022 | Mar. 24, 2022 | Nov. 05, 2021 | Oct. 18, 2021 | Oct. 01, 2021 | May 03, 2021 | Nov. 12, 2020 | Oct. 01, 2020 | May 04, 2020 | Sep. 30, 2022 | Dec. 31, 2021 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Jul. 10, 2020
Payments to Acquire Investments, Total |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 25,075 |  | $ (0) |  |  |
Gain (Loss) on Disposition of Business |  |  |  |  |  |  |  |  |  |  |  |  | $ (0) |  |  |  | $ (0) | 13,833 |  | (0) |  |  |
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  |  | 0 | (0) |  | 33,406 |  |  |
Equity Method Investments |  |  |  |  |  |  |  |  |  |  |  |  | 1,027,837 |  | $ 589,067 |  |  | 1,027,837 |  |  | $ 1,027,837 |  |
Derivative Liability, Noncurrent |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  | 81,627 |  |  | 0 |  |  | 0 |  |
MBI [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Finite-lived Intangible Assets, Basis Difference Between Fair Value and Carrying Value |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 186,600 |  |  |  |  |  |  |  |
Other Noncurrent Liabilities [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative Liability, Noncurrent | [1] |  |  |  |  |  |  |  |  |  |  |  | 35,520 |  | 123,620 |  |  | 35,520 |  |  | 35,520 |  |
MBI Net Option [Member] | Other Noncurrent Liabilities [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative Liability, Noncurrent |  |  |  |  |  |  |  |  |  |  |  |  | $ 35,500 |  | $ 123,600 |  |  | 35,500 |  |  | 35,500 |  |
Hargray [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  |  |  |  |  |  |  | 85.00% |  | 15.00% |  |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Gross |  |  |  |  |  |  |  |  | $ 2,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred, Including Equity Interest in Acquiree Held Prior to Combination, Total |  |  |  |  |  |  |  |  | 2,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain |  |  |  |  |  |  |  |  | $ 33,400 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disposition of the Anniston Exchange [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) on Disposition of Business |  |  |  |  |  |  |  |  |  |  | $ 82,600 |  |  |  |  |  |  |  |  |  |  |  |
Wisper ISP, LLC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 40.40%
Equity Method Investment, Aggregate Cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 25,300
Payments to Acquire Equity Method Investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 10,300 |  |  | $ 22,200 |  |
Mega Broadband Investments Holdings [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  |  |  |  |  | 45.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Equity Method Investments |  |  |  |  |  |  |  |  |  | $ 574,900 |  |  |  |  |  |  |  |  |  |  |  |  |
Clearwave Fiber [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  |  |  |  |  |  |  |  | 58.00% |  | 58.00% |  |  | 58.00% |  |  | 58.00% |  |
Gain (Loss) on Disposition of Business |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 22,100 |  |  |  |  |
Percentage of Revenue |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.00% |  |  |  |  |  |  |  |
Equity Method Investments, Fair Value Disclosure |  |  |  |  |  |  |  |  |  |  |  |  | $ 440,000 |  | $ 440,000 |  |  | $ 440,000 |  |  | $ 440,000 |  |
MBI [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  |  |  |  |  |  |  |  | 45.00% | [2] | 45.00% |  |  | 45.00% | [2] |  | 45.00% | [2] |
Equity Method Investments |  |  |  |  |  |  |  |  |  | 630,700 |  |  | $ 569,033 | [2] | $ 557,715 | [2] |  | $ 569,033 | [2] |  | $ 569,033 | [2] |
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity |  |  |  |  |  |  |  |  |  |  |  |  | 499,600 |  | 508,300 |  |  | 499,600 |  |  | $ 499,600 |  |
Finite-lived Intangible Assets, Basis Difference Between Fair Value and Carrying Value |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 84,000 |  |  |  |  |  |  |  |
Income (Loss) from Equity Method Investments Before Amortization |  |  |  |  |  |  |  |  |  |  |  |  | 6,400 |  |  |  | 3,800 | 21,700 |  | 6,800 |  |  |
Amortization, Total |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,200 |  |  |  | $ 4,000 | $ 10,300 |  | $ 10,600 |  |  |
MBI [Member] | Call Option [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative Assets, Noncurrent, Total |  |  |  |  |  |  |  |  |  | 19,700 |  |  |  |  |  |  |  |  |  |  |  |  |
MBI [Member] | Put Option [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative Liability, Noncurrent |  |  |  |  |  |  |  |  |  | $ 75,500 |  |  |  |  |  |  |  |  |  |  |  |  |
AMG Technology [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership Percentage |  |  |  |  |  | 17.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Investments, Total |  |  |  |  |  | $ 50,000 |  |  |  |  |  | $ 27,200 |  |  |  |  |  |  |  |  |  |  |
AMG Technology [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership Percentage |  |  |  |  |  |  |  |  |  |  |  | 10.00% |  |  |  |  |  |  |  |  |  |  |
Hargray [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership Percentage |  |  |  |  |  |  |  |  |  |  | 15.00% |  |  |  |  |  |  |  |  |  |  |  |
Point Broadband Holdings [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership Percentage |  |  |  |  | 7.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Investments, Total |  |  |  |  | $ 5,400 |  |  | $ 25,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Point Broadband Holdings [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership Percentage |  |  |  |  |  |  |  | 10.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tristar Acquisition I Corp [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Investments, Total |  |  |  |  |  |  | $ 20,800 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tristar Acquisition I Corp [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership Percentage |  |  |  |  |  |  | 10.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
MetroNet Systems [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Investments, Total |  |  |  | $ 7,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment Owned, at Fair Value |  |  |  | $ 7,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
MetroNet Systems [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership Percentage |  |  |  | 10.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Visionary Communications [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Investments, Total |  |  | $ 7,200 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Visionary Communications [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership Percentage |  |  | 10.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Northwest Fiber Holdco [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Investments, Total |  | $ 50,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Northwest Fiber Holdco [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership Percentage |  | 10.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
[1] | Represents the net value of the Company’s call and put options associated with the remaining equity interests in MBI (as defined in note 5), consisting of an asset of $28.9 million and a liability of $61.7 million, respectively, as of June 30, 2022 and a liability of $17.8 million and a liability of $105.8 million, respectively, as of December 31, 2021. Refer to notes 5 and 10 for further information on the MBI Net Option (as defined in note 5).
[2] | The Company holds a call option to purchase all but not less than all of the remaining equity interests in MBI that the Company does not already own between January 1, 2023 and June 30, 2024. If the call option is not exercised, certain investors in MBI hold a put option to sell (and to cause all members of MBI other than the Company to sell) to the Company all but not less than all of the remaining equity interests in MBI that the Company does not already own between July 1, 2025 and September 30, 2025. The call and put options (collectively referred to as the “MBI Net Option”) are measured at fair value using Monte Carlo simulations that rely on assumptions around MBI’s equity value, MBI’s and the Company’s equity volatility, MBI’s and the Company’s EBITDA volatility, risk adjusted discount rates and the Company’s cost of debt, among others. The final MBI purchase price allocation resulted in $630.7 million being allocated to the MBI equity investment and $19.7 million and $75.5 million being allocated to the call and put options, respectively. The MBI Net Option is remeasured at fair value on a quarterly basis. The carrying value of the MBI Net Option liability was $32.7 million and $123.6 million as of June 30, 2022 and December 31, 2021, respectively, and was included within other noncurrent liabilities in the condensed consolidated balance sheets. Refer to note 10 for further information on the MBI Net Option.

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