Note 10 - Revenue (Details Textual) xbrli-pure in Thousands, $ in Thousands		9 Months Ended	12 Months Ended
	Mar. 18, 2019	Sep. 30, 2019	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)		Dec. 31, 2017 USD ($)	Jan. 01, 2019 USD ($)
Contract with Customer, Liability, Revenue Recognized			$ (239,548)
Cost of Revenue, Total			236,368	$ 249,243	[1],[2]	$ 244,900
Contract with Customer, Liability, Total			$ 149,303	$ 143,694			$ 143,700
Ascio Technologies, Inc. [Member]
Finite-Lived Intangible Asset, Useful Life	7 years
Customer Concentration Risk [Member] | Revenue Benchmark [Member]
Number of Customers			0	0		0
Customer Concentration Risk [Member] | Accounts Receivable [Member]
Number of Customers		0	0	0		0
Namecheap, Inc. [Member]
Domain Name Transfer to Counter Party				2,890
Contract with Customer, Liability, Revenue Recognized				$ 16,900
Cost of Revenue, Total				$ 16,800
Minimum [Member]
Domain Services, Purchased Term			1 year
Finite-Lived Intangible Asset, Useful Life			2 years
Minimum [Member] | Ascio Technologies, Inc. [Member] | Active Domain Name Contracts [Member]
Finite-Lived Intangible Asset, Useful Life	1 year
Maximum [Member]
Domain Services, Purchased Term			10 years
Finite-Lived Intangible Asset, Useful Life			15 years
Maximum [Member] | Ascio Technologies, Inc. [Member] | Active Domain Name Contracts [Member]
Finite-Lived Intangible Asset, Useful Life	10 years

[1] As a result of the bulk transfers of 2.89 million domain names to Namecheap throughout 2018, recognized Cost of revenue for the year ended December 31, 2018 includes $16.8 million, related to previously deferred prepaid registry fees, a portion of which would have otherwise been recognized after December 31, 2018.

[2] The Company has initially applied ASC 2016-02 (Topic 842) on January 1, 2019 using the modified retrospective method (note 2(v)). Under this method, the comparative information is not restated.