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Note 8 - Investments, Including Investments Accounted for Using the Equity Method - Reconciliation of the Company's Investments in Equity Affiliates (Details) - USD ($) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Dec. 31, 2019
Beginning of period |  |  | $ 771,805 | $ 568,713 | $ 568,713
Additional investment in unconsolidated affiliates |  |  | 13,175,000 |  | 264,834
Distributions received |  |  | (326,144) |  | (541,108)
Equity in income of unconsolidated affiliates | $ 1,342,826 | $ 159,564 | 2,406,151 | $ 323,333 | 479,366
End of period | $ 16,026,812 |  | $ 16,026,812 |  | $ 771,805

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- Definition The increase (decrease) during the reporting period in receivables to be collected from an entity that is controlling, under the control of, or within the same control group as the reporting entity by means of direct or indirect ownership. + 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 (a) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 + Details
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