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Note 11 - Revenue 1 (Details Textual) $ in Thousands		3 Months Ended					6 Months Ended
	Mar. 18, 2019	Jun. 30, 2019 USD ($)	Mar. 31, 2019	Jun. 30, 2018 USD ($)		Mar. 31, 2018 USD ($)	Jun. 30, 2019 USD ($)		Jun. 30, 2018 USD ($)		Jan. 01, 2019 USD ($)	Dec. 31, 2018 USD ($)	Jan. 05, 2018
Contract with Customer, Liability, Revenue Recognized							$ (117,218)
Cost of Goods and Services Sold, Total		$ 54,873		$ 54,501	[1]		106,805	[1]	$ 123,473	[1]
Contract with Customer, Liability, Total		$ 157,219					$ 157,219				$ 143,700	$ 143,694
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		1
Concentration Risk, Percentage									11.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member]
Number of Customers							0		0
Namecheap, Inc. [Member]
Domain Name Transfer to Counter Party													2,650,000
Contract with Customer, Liability, Revenue Recognized						$ 14,600
Cost of Goods and Services Sold, Total						$ 14,500
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] The Company has initially applied ASC 2016-02 (Topic 842) using the modified retrospective method. Under this method, the comparative information is not restated.

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