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Note 6 - Goodwill and Other Intangible Assets (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Jun. 30, 2025	Dec. 31, 2024
Goodwill	$ 130,410		$ 130,410			$ 130,410
Goodwill, Impairment Loss	0	$ 0	0	$ 0
Finite-Lived Intangible Assets Acquired			206
Customer Assets and Domain Names [Member]
Finite-Lived Intangible Asset, Useful Life (Year)					7 years
Finite-Lived Intangible Assets Acquired	$ 0		$ 200
Minimum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	2 years		2 years
Maximum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	15 years		15 years
Weighted Average [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	5 years 4 months 24 days		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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- Definition

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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.

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