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Note 10 - Revenue 1 (Details Textual) $ in Thousands		3 Months Ended
	Mar. 18, 2019	Mar. 31, 2019 USD ($)	Mar. 31, 2018 USD ($)		Jan. 01, 2019 USD ($)	Dec. 31, 2018 USD ($)	Jan. 05, 2018
Contract with Customer, Liability, Revenue Recognized		$ (56,722)
Cost of Goods and Services Sold, Total		51,932	$ 68,972	[1]
Contract with Customer, Liability, Total		$ 159,419			$ 143,700	$ 143,694
Minimum [Member]
Finite-Lived Intangible Asset, Useful Life		2 years
Maximum [Member]
Finite-Lived Intangible Asset, Useful Life		15 years
Ascio Technologies, Inc. [Member]
Finite-Lived Intangible Asset, Useful Life	7 years
Ascio Technologies, Inc. [Member] | Minimum [Member] | Active Domain Name Contracts [Member]
Finite-Lived Intangible Asset, Useful Life	1 year
Ascio Technologies, Inc. [Member] | Maximum [Member] | Active Domain Name Contracts [Member]
Finite-Lived Intangible Asset, Useful Life	10 years
Customer Concentration Risk [Member] | Revenue Benchmark [Member]
Number of Customers		0	1
Concentration Risk, Percentage			18.00%
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
[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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