Investments, Mortgage Loans, Investment Real Estate, Notes Receivable, and Short-Term Investments (Details) - USD ($)	9 Months Ended		12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Cost Method Investments [Abstract]
Equity Securities without Readily Determinable Fair Value, Amount	$ 14,417,247		$ 10,919,247	[1]
Mortgage Loans [Abstract]
Mortgage loans acquired, including discounted mortgage loans	$ 12,692,488		4,216,644
Servicing fee on loan	0.25%
Loan origination	0.50%
Loan limit threshold for appraised property value	80.00%
Mortgage loans reserve	$ 0		0
Mortgage loan holdings [Abstract]
In good standing	18,319,413		8,223,286
Overdue interest over 90 days	2,072,640		0
Total mortgage loans	20,392,053		8,223,286	[1]
Investment Real Estate [Abstract]
Impairment on investment real estate	0
Total investment real estate	$ 36,421,627		$ 44,344,236	[1]
Investments in oil/gas royalties as a % of total investment real estate portfolio	52.00%		44.00%
Investment real estate acquired	$ 0	$ 1,729,000
Notes Receivable [Abstract]
Valuation allowance	0		$ 0
Notes receivable acquired	3,500,000	8,532,796
Short-Term Investments [Abstract]
Short-term investments acquired	7,890,228	$ 0
Raw Land [Member]
Investment Real Estate [Abstract]
Total investment real estate	9,915,856		16,089,540
Commercial [Member]
Investment Real Estate [Abstract]
Total investment real estate	5,414,238		4,908,028
Residential [Member]
Investment Real Estate [Abstract]
Total investment real estate	2,235,678		2,251,772
Land, Minerals and Royalty Interests [Member]
Investment Real Estate [Abstract]
Total investment real estate	$ 18,855,855		$ 21,094,896
Minimum [Member]
Investment Real Estate [Abstract]
Estimated useful life	3 years
Maximum [Member]
Investment Real Estate [Abstract]
Estimated useful life	30 years
Farm Loans [Member] | Minimum [Member]
Mortgage Loans [Abstract]
Interest rate on mortgage loans	5.00%		5.00%
Farm Loans [Member] | Maximum [Member]
Mortgage Loans [Abstract]
Interest rate on mortgage loans	5.00%		5.00%
Commercial Loans [Member] | Minimum [Member]
Mortgage Loans [Abstract]
Interest rate on mortgage loans	4.24%		4.82%
Commercial Loans [Member] | Maximum [Member]
Mortgage Loans [Abstract]
Interest rate on mortgage loans	7.50%		7.50%
Residential Loans [Member] | Minimum [Member]
Mortgage Loans [Abstract]
Interest rate on mortgage loans	5.50%		5.50%
Residential Loans [Member] | Maximum [Member]
Mortgage Loans [Abstract]
Interest rate on mortgage loans	5.50%		5.50%

[1] Balance sheet audited at December 31, 2019.