Note 10 - Revenue - Cost of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018		Dec. 31, 2017
Network, other costs	$ 9,190	$ 9,846	[1]	$ 9,324
Cost of Revenue, Total	236,368	249,243	[1],[2]	244,900
Network Expenses [Member]
Network, other costs	9,190	9,846	[2]	9,324
Network, depreciation and amortization costs	9,599	7,294	[2]	4,976
Cost of Revenue, Total	18,789	17,140	[2]	14,300
Network Access Services [Member]
Cost of revenue	48,343	50,055	[2]	48,640
Network, other costs	2,007	2,029		1,861
Cost of Revenue, Total	57,273	56,193		52,748
Network Access Services [Member] | Mobile Services [Member]
Cost of revenue	44,415	46,061	[2]	45,335
Network Access Services [Member] | Other Services [Member]
Cost of revenue	3,928	3,994	[2]	3,305
Domain Name Services [Member]
Cost of revenue	169,236	182,048	[2]	181,960
Network, other costs	7,183	7,817		7,463
Cost of Revenue, Total	179,095	193,050		192,152
Domain Name Services [Member] | Wholesale [Member]
Cost of revenue	151,516	163,370	[2]	163,463
Domain Name Services [Member] | Retail Services [Member]
Cost of revenue	17,093	17,725	[2]	17,346
Domain Name Services [Member] | Portfolio [Member]
Cost of revenue	627	953	[2]	1,151
Domain Name Services [Member] | Domain Services [Member] | Wholesale [Member]
Cost of revenue	148,530	160,216	[2]	161,013
Domain Name Services [Member] | Value Added Services [Member] | Wholesale [Member]
Cost of revenue	$ 2,986	$ 3,154	[2]	$ 2,450

[1] 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.

[2] 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.