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Note 20 - Subsequent Events (Details Textual) - USD ($) |  |  |  |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Apr. 06, 2021 | Apr. 01, 2021 | Jan. 26, 2021 | Jan. 25, 2021 | Jan. 20, 2021 | Mar. 29, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Equity Securities, FV-NI |  |  |  |  |  |  | $ 64,036,482 | $ 55,907,927
Proceeds from Issuance of Common Stock |  |  |  |  |  |  | $ 59,549,751 | $ 32,204,732
Subsequent Event [Member] |  |  |  |  |  |  |  |
Proceeds from Sale of Debt and Equity Securities, FV-NI, Held-for-investment |  |  |  |  |  | $ 34,600,000 |  |
Subsequent Event [Member] | Thomas Outdoors, LLC [Member] |  |  |  |  |  |  |  |
Payments to Acquire Productive Assets, Total |  |  | $ 6,102,508 |  |  |  |  |
Subsequent Event [Member] | Dream Finders Homes, Inc. [Member] |  |  |  |  |  |  |  |
Proceeds from Collection of Notes Receivable |  |  |  | $ 20,567,776 |  |  |  |
Subsequent Event [Member] | DFH Class A Common Stock [Member] |  |  |  |  |  |  |  |
Equity Securities, FV-NI, Shares, Acquired from Conversion (in shares) |  |  |  |  | 4,681,099 |  |  |
Equity Securities, FV-NI, Shares, Purchase (in shares) |  |  |  |  | 120,000 |  |  |
Equity Securities, FV-NI, Shares, Purchase, Price Per Share (in dollars per share) |  |  |  |  | $ 13.00 |  |  |
Subsequent Event [Member] | DFH Class A Common Stock [Member] | Minimum [Member] |  |  |  |  |  |  |  |
Equity Securities, FV-NI |  |  |  |  | $ 111,000,000 |  |  |
Common Class A [Member] |  |  |  |  |  |  |  |
Common Stock, Par or Stated Value Per Share (in dollars per share) |  |  |  |  |  |  | $ 0.001 | $ 0.001
Public Offering [Member] | Common Class A [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) | 2,345,000 |  |  |  |  |  |  |
Shares Issued, Price Per Share (in dollars per share) | $ 25.00 |  |  |  |  |  |  |
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ 0.001 |  |  |  |  |  |  |
Proceeds from Issuance of Common Stock | $ 58,600,000 |  |  |  |  |  |  |
Public Offering Including Over-allotment Option [Member] | Common Class A [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) | 2,645,000 |  |  |  |  |  |  |
Over-Allotment Option [Member] | Common Class A [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) | 345,000 |  |  |  |  |  |  |
Sold by Selling Stockholder [Member] | Common Class A [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) | 300,000 |  |  |  |  |  |  |
Dream Finders Homes, Inc. [Member] | IPO [Member] | Common Class A [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) |  |  |  |  | 9,600,000 |  |  |
Shares Issued, Price Per Share (in dollars per share) |  |  |  |  | $ 13.00 |  |  |
GIG [Member] | Subsequent Event [Member] | Insurance Brokerage Company [Member] |  |  |  |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  | 100.00% |  |  |  |  |  |
Business Combination, Consideration Transferred, Total |  | $ 2,225,000 |  |  |  |  |  |

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