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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.

X
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