Note 10 - Revenue 1 (Details Textual) $ in Thousands	12 Months Ended
Note 10 - Revenue 1 (Details Textual) $ in Thousands	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Revenue from Contract with Customer, Including Assessed Tax	$ 390,300	$ 362,275	$ 339,337
Minimum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	2 years
Minimum [Member] \| Active Domain Name Contracts [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	1 year
Maximum [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	15 years
Maximum [Member] \| Active Domain Name Contracts [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	10 years
Wavelo [Member] \| Operating Segments [Member]
Revenue from Contract with Customer, Including Assessed Tax	$ 47,623	$ 39,861	$ 38,670
Customer Concentration Risk [Member] \| Revenue Benchmark [Member]
Number of Customers	1	1
Customer Concentration Risk [Member] \| Revenue Benchmark [Member] \| Wavelo [Member] \| Operating Segments [Member]
Number of Customers	1	1	1
Customer Concentration Risk [Member] \| Revenue Benchmark [Member] \| One Customer [Member] \| Wavelo [Member] \| Operating Segments [Member]
Concentration Risk, Percentage	11.70%	10.70%	10.70%
Revenue from Contract with Customer, Including Assessed Tax	$ 45,500	$ 38,800	$ 36,200
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| One Customer [Member]
Concentration Risk, Percentage	44.00%	56.00%