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Note 4 - Goodwill and Other Intangible Assets (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Goodwill | $ 130,410 | $ 130,410
Goodwill, Impairment Loss | 0 | 0
Finite-Lived Intangible Assets Acquired | $ 575 | $ 528
Customer Assets and Domain Names [Member] |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 7 years |
Finite-Lived Intangible Assets Acquired | $ 600 |
Minimum [Member] |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 2 years |
Maximum [Member] |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 15 years |
Weighted Average [Member] |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 5 years 4 months 24 days |
Domain Services Operating Segment [Member] |  |
Goodwill | $ 107,700 |
Goodwill Percentage Related to Operating Segments | 83.00% |
Network Access Services [Member] |  |
Goodwill | $ 22,700 |
Goodwill Percentage Related to Operating Segments | 17.00% |

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