Note 5 - Goodwill and Other Intangible Assets (Details Textual) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Goodwill, Ending Balance	$ 130,410	$ 130,410
Goodwill, Impairment Loss	0	0
Impairment of Intangible Assets, Indefinite-Lived (Excluding Goodwill)	0	0	$ 0
Finite-Lived Intangible Assets Acquired	$ 528	$ 782
Customer Assets and Domain Names [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	7 years
Finite-Lived Intangible Assets Acquired	$ 500
Minimum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	2 years
Maximum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	15 years
Domain Services Operating Segment [Member]
Goodwill, Ending Balance	$ 107,700
Goodwill Percentage Related to Operating Segments	83.00%
Network Access Services [Member]
Goodwill, Ending Balance	$ 22,700
Goodwill Percentage Related to Operating Segments	17.00%

Represents the percentage of goodwill in relation to the company's operating segments.

No definition available.

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

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