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Note 5 - Goodwill and Other Intangible Assets (Details Textual) - USD ($) |  |  | 12 Months Ended
--- | --- | --- | ---
Apr. 01, 2016 | Mar. 31, 2016 | Dec. 31, 2016 | Dec. 31, 2015
Goodwill |  |  | $ 21,005,143 | $ 21,005,143
Finite-lived Intangible Assets Acquired |  |  | $ 6,529,654 | 760,000
Customer Relationships [Member] |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  | 7 years |
Finite-lived Intangible Assets Acquired |  |  | $ 6,529,654 | 68,000
Melbourne IT Limited [Member] |  |  |  |
Business Acquisition, Transaction Costs | $ 200,000 |  |  |
Melbourne IT Limited [Member] | Demand Loan Facility 2012 [Member] |  |  |  |
Proceeds from Issuance of Debt |  | $ 6,000,000 |  |
Melbourne IT Limited [Member] | Customer Relationships [Member] |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life | 7 years |  |  |
Finite-lived Intangible Assets Acquired | $ 6,000,000 |  |  |
Four Smaller Domain Related Acquisitions [Member] | Customer Relationships [Member] |  |  |  |
Finite-lived Intangible Assets Acquired |  |  | $ 300,000 |
Minimum [Member] |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  | 4 years |
Maximum [Member] |  |  |  |
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life |  |  | 15 years |
Domain Name Services [Member] |  |  |  |
Impairment of Intangible Assets (Excluding Goodwill) |  |  | $ 42,673 | $ 206,116
Domain Services Operating Segment [Member] |  |  |  |
Goodwill |  |  | $ 18,900,000 |
Goodwill Percentage Related to Operating Segments |  |  | 90.00% |
Network Access Services [Member] |  |  |  |
Goodwill |  |  | $ 2,100,000 |
Goodwill Percentage Related to Operating Segments |  |  | 10.00% |

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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 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=64834752&loc=SL49117168-202975 + Details
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