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Note 4 - Acquisitions (Details Textual) - USD ($) | Mar. 31, 2019 | Mar. 18, 2019 | Feb. 13, 2018 | Feb. 01, 2017 | Feb. 27, 2015
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Ting Virginia LLC [Member] |  |  |  |  |
Business Combination, Consideration Transferred, Total |  |  | $ 1,200,000 |  |
Payments for Repurchase of Redeemable Noncontrolling Interest |  |  | $ 1,200,000 |  |
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, Total |  |  |  | $ 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% |
Ascio Technologies, Inc. [Member] |  |  |  |  |
Business Combination, Consideration Transferred, Total |  | $ 29,461,000 |  |  |
Business Combination, Consideration Transferred, Excluding Working Capital Deficiency Acquired |  | 29,440,000 |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Working Capital Deficiency |  | $ 21,205 |  |  |
Finite-Lived Intangible Asset, Useful Life |  | 7 years |  |  |
Business Combination, Acquisition Related Costs |  | $ 500,000 |  |  |
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual | $ 800,000 |  |  |  |
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual | $ (100,000) |  |  |  |
Ascio Technologies, Inc. [Member] | General and Administrative Expense [Member] |  |  |  |  |
Business Combination, Acquisition Related Costs |  | $ 300,000 |  |  |

X
- Definition Amount of consideration transferred excluding working capital deficiency acquired, 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 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 Amount of working capital deficiency assumed at the acquisition date. + 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 Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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 This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e1043-128460 + 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6613-128477 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6578-128477 + 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://fasb.org/us-gaap/role/ref/legacyRef -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://fasb.org/us-gaap/role/ref/legacyRef -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 Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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