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Note 11 - Revenue 1 (Details Textual) $ in Thousands		12 Months Ended
	Jan. 01, 2021	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Jan. 01, 2023 USD ($)
Revenue from Contract with Customer, Including Assessed Tax		$ 339,337	$ 321,142	$ 304,337
Contract with Customer, Liability		$ 148,083	145,131		$ 145,100
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
Mobile Platform Services [Member] | Operating Segments [Member]
Revenue from Contract with Customer, Including Assessed Tax		$ 38,670	$ 24,344	$ 16,781
Customer Concentration Risk [Member] | Accounts Receivable [Member]
Number of Customers	1	1	1
Customer Concentration Risk [Member] | Accounts Receivable [Member] | One Customer [Member]
Concentration Risk, Percentage		39.00%	46.00%	46.00%
Customer Concentration Risk [Member] | Revenue Benchmark [Member]
Number of Customers			0	0
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Mobile Platform Services [Member] | Operating Segments [Member]
Number of Customers		1
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | One Customer [Member] | Mobile Platform Services [Member] | Operating Segments [Member]
Concentration Risk, Percentage		10.70%
Revenue from Contract with Customer, Including Assessed Tax		$ 36,200

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