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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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