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Note 5 - Goodwill and Other Intangible Assets (Details Textual) - USD ($) |  | 3 Months Ended |
--- | --- | --- | ---
Jan. 20, 2017 | Mar. 31, 2017 | Mar. 31, 2016 | Dec. 31, 2016
Goodwill |  | $ 85,526,787 |  | $ 21,005,143
Goodwill, Acquired During Period |  | 64,500,000 |  |
Finite-Lived Intangible Assets, Accumulated Amortization |  | 8,700,000 |  |
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) |  |  | $ 20,985 |
eNom Incorporated [Member] |  |  |  |
Goodwill | $ 64,521,645 |  |  |
eNom Incorporated [Member] | Brand [Member] |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life | 7 years |  |  |
eNom Incorporated [Member] | Technology-Based Intangible Assets [Member] |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life | 2 years |  |  |
eNom Incorporated [Member] | Customer Relationships [Member] |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life | 7 years |  |  |
Domain Name Services [Member] |  |  |  |
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) |  | 20,985 |  |
Domain Services Operating Segment [Member] |  |  |  |
Goodwill |  | $ 83,400,000 |  |
Goodwill Percentage Related to Operating Segments |  | 98.00% |  |
Network Access Services [Member] |  |  |  |
Goodwill |  | $ 2,100,000 |  |
Goodwill Percentage Related to Operating Segments |  | 2.00% |  |

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 + Details
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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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- Definition Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275 + Details
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