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Note 10 - Revenue 1 (Details Textual) $ in Thousands |  | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Mar. 18, 2019 | Sep. 30, 2019 USD ($) | Sep. 30, 2018 USD ($) | Sep. 30, 2019 USD ($) | Sep. 30, 2018 USD ($) | Dec. 31, 2018 USD ($) | Jan. 01, 2019 USD ($) | Sep. 25, 2018 | Jan. 05, 2018
Contract with Customer, Liability, Revenue Recognized |  |  |  | $ (178,737) |  |  |  |  |
Contract with Customer, Liability, Total |  | $ 154,141 |  | $ 154,141 |  | $ 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 | 0 |  |  |  |
Customer Concentration Risk [Member] | Accounts Receivable [Member] |  |  |  |  |  |  |  |  |
Number of Customers |  |  |  | 0 |  | 0 |  |  |
Namecheap, Inc. [Member] |  |  |  |  |  |  |  |  |
Domain Name Transfer to Counter Party |  |  |  |  |  |  |  | 240,000 | 2,650,000
Contract with Customer, Liability, Revenue Recognized |  |  | $ 1,700 |  | $ 16,300 |  |  |  |
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 |  |  |  |  |  |  |  |

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