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Note 11 - Contract Costs (Details Textual) xbrli-pure in Thousands | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2018 USD ($) | Jun. 30, 2017 USD ($) | [1] | Jun. 30, 2018 USD ($) | Jun. 30, 2017 USD ($) | [1] | Mar. 31, 2018 USD ($) | Jan. 05, 2018 | Jan. 01, 2018 USD ($) | Dec. 31, 2017 USD ($)
Capitalized Contract Cost, Net, Total |  | $ 1,354,000 |  |  | $ 1,354,000 |  |  |  |  | $ 1,400,000 |  |
Change in Capitalized Contract Costs |  | 25,000 |  |  | 50,000 |  |  |  |  |  |  |
Capitalized Contract Cost, Impairment Loss |  | 0 |  |  |  |  |  |  |  |  |  |
Contract with Customer, Liability, Revenue Recognized | [2] | 55,284,000 |  |  | 125,253,000 |  |  |  |  |  |  |
Deferred Costs of Acquisition [Member] |  |  |  |  |  |  |  |  |  |  |  |
Capitalized Contract Cost, Net, Total |  | 1,354,000 | [3],[4] |  | 1,354,000 | [3],[4] |  | $ 1,378,000 |  |  | $ 1,404,000 | [3],[4]
Increase (Decrease) in Capitalized Costs |  | 244,000 |  |  | 439,000 |  |  |  |  |  |  |
Capitalized Contract Cost, Amortization |  | $ 268,000 |  |  | 489,000 |  |  |  |  |  |  |
Capitalized Contract Cost, Impairment Loss |  |  |  |  | $ 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 |  |  |  |  |  |  |
Change in Capitalized Contract Costs |  | $ 100,000 |  |  | $ 100,000 |  |  |  |  |  |  |
Domain Registration Costs [Member] |  |  |  |  |  |  |  |  |  |  |  |
Capitalized Contract Cost, Net, Total |  | 115,456,000 |  |  | 115,456,000 |  |  | $ 115,660,000 |  |  | $ 127,003,000 |
Increase (Decrease) in Capitalized Costs |  | 41,177,000 |  |  | 87,160,000 |  |  |  |  |  |  |
Capitalized Contract Cost, Amortization |  | 41,380,000 |  |  | 98,708,000 |  |  |  |  |  |  |
Change in Capitalized Contract Costs |  | 200,000 |  |  | 11,500,000 |  |  |  |  |  |  |
Capitalized Contract Cost, Impairment Loss |  | $ 0 |  |  | 0 |  |  |  |  |  |  |
Domain Name Transfer to Counter Party |  |  |  |  |  |  |  |  | 2,650 |  |  |
Domain Registration Costs [Member] | Domain Services [Member] |  |  |  |  |  |  |  |  |  |  |  |
Contract with Customer, Liability, Revenue Recognized |  |  |  |  | $ 14,500,000 |  |  |  |  |  |  |
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 Company has initially applied ASC 2014-09 (Topic 606) using the modified retrospective method. Under this method, the comparative information is not restated.
[2] | As a result of the bulk transfer of 2.65 million domain names to Namecheap on January 5, 2018, recognized revenue for the six months ended June 30, 2018 includes $14.6 million related to previously deferred revenue for these names.
[3] | As a result of the bulk transfer of 2.65 million domain names to Namecheap on January 5th, 2018, recognized costs for the six months ended June 30, 2018 includes $14.5 million related to previously deferred revenue for these names.
[4] | 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 for additional information.

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