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Note 11 - Contract Costs (Details Textual) xbrli-pure in Thousands | 3 Months Ended | 9 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2018 USD ($) | Sep. 30, 2018 USD ($) | Sep. 25, 2018 | Jun. 30, 2018 USD ($) | Jan. 05, 2018 | Jan. 01, 2018 USD ($) | Dec. 31, 2017 USD ($)
Capitalized Contract Cost, Net, Total | $ 1,383,000 |  | $ 1,383,000 |  |  |  |  | $ 1,400,000 |  |
Contract with Customer, Liability, Revenue Recognized | (57,741,000) |  | (182,994,000) |  |  |  |  |  |  |
Deferred Costs of Acquisition [Member] |  |  |  |  |  |  |  |  |  |
Capitalized Contract Cost, Net, Total | 1,383,000 | [1] | 1,383,000 | [1] |  | $ 1,354,000 |  |  | $ 1,404,000 | [1]
Increase (Decrease) in Capitalized Costs | 245,000 |  | 684,000 |  |  |  |  |  |  |
Capitalized Contract Cost, Amortization | (216,000) |  | (705,000) |  |  |  |  |  |  |
Capitalized Contract Cost, Impairment Loss | $ 0 |  | $ 0 |  |  |  |  |  |  |
Deferred Costs of Acquisition [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |
Capitalized Contract Cost, Amortization Period | 2 years |  | 2 years |  |  |  |  |  |  |
Deferred Costs of Acquisition [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |
Capitalized Contract Cost, Amortization Period | 10 years |  | 10 years |  |  |  |  |  |  |
Domain Registration Costs [Member] |  |  |  |  |  |  |  |  |  |
Capitalized Contract Cost, Net, Total | $ 111,226,000 |  | $ 111,226,000 |  |  | $ 115,456,000 |  |  | $ 127,003,000 |
Increase (Decrease) in Capitalized Costs | 39,453,000 |  | 126,613,000 |  |  |  |  |  |  |
Capitalized Contract Cost, Amortization | (43,683,000) |  | (142,390,000) |  |  |  |  |  |  |
Capitalized Contract Cost, Impairment Loss | 0 |  | 0 |  |  |  |  |  |  |
Domain Name Transfer to Counter Party |  |  |  |  | 240 |  | 2,650 |  |  |
Contract with Customer, Liability, Revenue Recognized | $ 1,700,000 |  | $ 16,200,000 |  |  |  |  |  |  |
Domain Registration Costs [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |
Capitalized Contract Cost, Amortization Period | 1 year |  | 1 year |  |  |  |  |  |  |
Domain Registration Costs [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |
Capitalized Contract Cost, Amortization Period | 10 years |  | 10 years |  |  |  |  |  |  |
[1] | The beginning balance consists entirely of a cumulative adjustment recorded on January 1, 2018 as a result of the modified retrospective adoption of ASU 2014-09. See note 3 &#8211; Recent accounting pronouncements for more information.

X
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