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Note 21 - Commitments and Contingencies (Details Textual) - USD ($) |  | 12 Months Ended | 312 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jan. 07, 2022 | Dec. 31, 2024 | Dec. 31, 2016 | Dec. 31, 2047 | Sep. 30, 2025 | Feb. 09, 2015
Contractual Obligation, Term (Year) |  | 10 years |  |  |  |
Purchase Commitment, Remaining Minimum Amount Committed |  |  |  |  | $ 5,100,000 |
Ting Fiber Inc. [Member] |  |  |  |  |  |
Debt Instrument, Term (Year) | 25 years |  |  |  |  |
Ting Fiber Inc. [Member] | Forecast [Member] |  |  |  |  |  |
Lease, Cost |  |  |  | $ 593,000,000 |  |
City of Westminster, Maryland [Member] | Loan to Finance WFN Construction [Member] |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  | $ 21,000,000 |  |  |
Debt Instrument, Term of Interest Only Payments (Year) |  |  | 5 years |  |  |
Debt Instrument, Term (Year) |  |  | 30 years |  |  |
Long-Term Debt |  | $ 16,200,000 |  |  |  |
Guarantee Obligations [Member] | Lease and Network Operations Agreement [Member] | Ting Fiber Inc. [Member] |  |  |  |  |  |
Loss Contingency, Debt Service Guarantee, Revenue Shortfall Difference, Lower Threshold |  |  |  |  |  | $ 50,000
Loss Contingency, Debt Service Guarantee, Revenue Shortfall Difference, Upper Threshold |  |  |  |  |  | $ 150,000
Loss on Long-Term Purchase Commitment [Member] |  |  |  |  |  |
Loss Contingency Accrual |  |  |  |  | $ 1,500,000 |

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