Note 3 - Investments (Details Textual)	12 Months Ended
Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Proceeds from Sale, Maturity and Collection of Investments, Total	$ 8,605,475	$ 460,638
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	19
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Loss, before Tax	$ 113,329	2,389,278
Other-than-temporary Impairment Loss, Debt Securities, Available-for-sale, Total	0	0
Debt and Equity Securities, Unrealized Gain (Loss), Total	1,256,769
Debt and Equity Securities, Realized Gain (Loss), Total	$ (214,435)	$ (4,499)
Fixed Income Securities [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	6
Collateralized Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	6
Common Stock [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	4
Preferred Stock [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	2
Senior Loan Fund [Member]
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions	1

Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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-Section 50
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Amount of realized gain (loss) on investment in debt and equity securities.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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The cash inflow associated with the sale, maturity and collection of all investments such as debt, security and so forth during the period.

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