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Note 17 - Subsequent Events (Details Textual) - Subsequent Event [Member] - USD ($) |  |  |  | 2 Months Ended
--- | --- | --- | --- | ---
Mar. 10, 2020 | Jan. 13, 2020 | Jan. 01, 2020 | Mar. 12, 2020
Payments to Acquire Marketable Securities, Total |  |  |  | $ 22,500,000
Non-voting Preferred Units of DFH LLC [Member] |  |  |  |
Redemption of Preferred Units |  | $ 6,000,000 |  |
South Coast Surety Insurance Services, LLC [Member] | GIG [Member] |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  | 30.00% |
Business Combination, Consideration Transferred, Total |  |  | $ 1,406,409 |
FibAire Communications LLC [Member] |  |  |  |
Business Combination, Consideration Transferred, Total | $ 13,712,491 |  |  |
Business Combination, Consideration Transferred, Percent, Cash | 90.00% |  |  |
Business Combination, Consideration Transferred, Percent, Equity | 10.00% |  |  |
Business Combination, Equity Issued, Percent Issued to Acquired Company | 10.00% |  |  |
Payments to Acquire Business, Held in Escrow | $ 1,851,186 |  |  |

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