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Note 3 - Acquisitions (Details Textual) - USD ($) |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | ---
Feb. 13, 2018 | Feb. 01, 2017 | Jan. 20, 2017 | Feb. 27, 2015 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Redeemable Noncontrolling Interest, Equity, Carrying Amount |  |  |  |  | $ 1,136,390 | $ 3,086,090 |
Redeemable Noncontrolling Interest, Equity, Redemption Value |  |  |  |  | 1,200,000 |  |
Payments to Acquire Businesses, Gross |  |  |  |  |  |  | $ 357,492
Ting Virginia LLC [Member] | Subsequent Event [Member] |  |  |  |  |  |  |
Repurchase of Redeemable Noncontrolling Interest, Percentage | 10.00% |  |  |  |  |  |
Ting Virginia LLC [Member] |  |  |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  | 20.00% |  | 70.00% |  |  |
Business Combination, Consideration Transferred |  | $ 2,000,000 |  | $ 3,500,000 |  |  |
Ting Virginia LLC [Member] | Exercisable by the Minority Shareholders [Member] |  |  |  |  |  |  |
Business Combination, Interest Subject to Call Option, Not Exercised in Period |  | 10.00% |  |  |  |  |
Ting Virginia LLC [Member] | Exercisable by the Minority Shareholders [Member] | Exercisable on Fourth Anniversary of Business Combination [Member] |  |  |  |  |  |  |
Business Combination, Consideration to be Transfered Upon Exercise of Options Per Percentage Point |  | $ 120,000 |  |  |  |  |
eNom, Incorporated [Member] |  |  |  |  |  |  |
Business Combination, Consideration Transferred |  |  | $ 77,831,677 |  |  |  |
Payments to Acquire Businesses, Gross |  |  | 83,500,000 |  |  |  |
Business Combination, Consideration Transferred, Estimated Price Adjusments |  |  | $ 5,700,000 |  |  |  |
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual |  |  |  |  | 110,800,000 |  |
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual |  |  |  |  | 5,100,000 |  |
eNom, Incorporated [Member] | General and Administrative Expense [Member] |  |  |  |  |  |  |
Business Acquisition, Transaction Costs |  |  |  |  | $ 300,000 | $ 500,000 |

X
- Definition Represents the amount that will be transferred upon the exercise of the option per percentage point. + References No definition available. + Details
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- Definition Amount of estimated price adjustments that are expected to be incurred by the acquiring entity. Excludes cash. + References No definition available. + Details
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- Definition Represent the percentage of the acquiree subject to put and call option not exercised in period in a business combination. + References No definition available. + Details
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- Definition The percentage of redeemable noncontrolling interest that would be purchased during the period. + References No definition available. + Details
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- Definition Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition. + References No definition available. + Details
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- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 + Details
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- Definition This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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- Definition This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585 + Details
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- Definition As of the reporting date, the aggregate carrying amount of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph (12)(c) -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph (16)(c) -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph 15 -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph 14 -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 + Details
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- Definition Redemption value, as if currently redeemable, of redeemable noncontrolling interest classified as temporary equity and the election has been made to accrete changes in redemption value to the earliest redemption date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph 24(b) -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 + Details
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