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Note 6 - Goodwill and Other Intangible Assets - Acquired Intangible Assets by Major Class (Details) - USD ($) | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017 | [2]
Balances | [1] | $ 58,414,178 |
Finite-lived intangible assets acquired |  | 1,372 |
Additions to/(disposals from) domain portfolio, net |  | (37,478) | $ (9,789)
Amortization expense |  | (2,330,762) | $ (1,760,971)
Balances |  | 56,047,310 |
Brand [Member] |  |  |
Balances |  | 10,792,790 |
Finite-lived intangible assets acquired |  |  |
Additions to/(disposals from) domain portfolio, net |  |  |
Amortization expense |  | (450,510) |
Balances |  | 10,342,280 |
Customer Relationships [Member] |  |  |
Balances |  | 32,185,398 |
Finite-lived intangible assets acquired |  | 1,372 |
Additions to/(disposals from) domain portfolio, net |  |  |
Amortization expense |  | (1,381,220) |
Balances |  | 30,805,550 |
Technology-Based Intangible Assets [Member] |  |  |
Balances |  | 2,112,500 |
Finite-lived intangible assets acquired |  |  |
Additions to/(disposals from) domain portfolio, net |  |  |
Amortization expense |  | (487,500) |
Balances |  | 1,625,000 |
Network Rights [Member] |  |  |
Balances |  | 561,224 |
Finite-lived intangible assets acquired |  |  |
Additions to/(disposals from) domain portfolio, net |  |  |
Amortization expense |  | (11,532) |
Balances |  | 549,692 |
Surname Domain Names [Member] |  |  |
Balances |  | 11,209,912 |
Finite-lived intangible assets acquired |  |  |
Additions to/(disposals from) domain portfolio, net |  | (4,543) |
Amortization expense |  |  |
Balances |  | 11,205,369 |
Direct Navigation Domain Names [Member] |  |  |
Balances |  | 1,552,354 |
Finite-lived intangible assets acquired |  |  |
Additions to/(disposals from) domain portfolio, net |  | (32,935) |
Amortization expense |  |  |
Balances |  | $ 1,519,419 |
[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] | The Company has initially applied ASC 2014-09 (Topic 606) using the modified retrospective method. Under this method, the comparative information is not restated.

X
- Definition Aggregate amount of indefinite life intangible assets recognized as cost of revenues, as a result of the disposal of these domain names, during the period. + References No definition available. + Details
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Period Type: | duration

X
- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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- Definition Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph ((a)(1),(b)) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274 + Details
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