Investments, Mortgage Loans, Investment Real Estate, Notes Receivables, and Short-Term Investments (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Mortgage Loans [Abstract]
Mortgage loans acquired, including discounted mortgage loans	$ 13,213,037	$ 4,367,644
Servicing fee on loan	0.25%
Loan origination	0.50%	0.50%
Loan limit threshold for appraised property value	80.00%
Mortgage loans reserve	$ 0	$ 0
Mortgage loan holdings [Abstract]
In good standing	18,704,351	8,223,286
Overdue interest over 90 days	2,098,014	0
Total mortgage loans	20,802,365	8,223,286
Total foreclosed loans during the year	0	234,044
Investment Real Estate [Abstract]
Impairment on investment real estate	0	0
Total investment real estate	$ 38,086,391	$ 44,344,236
Investments in oil/gas royalties as a % of total investment real estate portfolio	48.00%	44.00%
Investment real estate acquired	$ 2,995,519	$ 1,958,982
Notes receivable [Abstract]
Valuation allowance	0	0
Notes Receivable acquired	3,500,000	16,031,605
Short-Term Investments [Abstract]
Short-term investments acquired	$ 7,890,228	10,403,628
Minimum [Member]
Investment Real Estate [Abstract]
Estimated useful life	3 years
Maximum [Member]
Investment Real Estate [Abstract]
Estimated useful life	30 years
Raw Land [Member]
Investment Real Estate [Abstract]
Total investment real estate	$ 11,727,103	16,089,540
Commercial [Member]
Investment Real Estate [Abstract]
Total investment real estate	3,530,064	4,908,028
Residential [Member]
Investment Real Estate [Abstract]
Total investment real estate	2,797,648	2,251,772
Land, Minerals and Royalty Interests [Member]
Investment Real Estate [Abstract]
Total investment real estate	$ 20,031,576	$ 21,094,896
Farm Loans [Member] | Minimum [Member]
Mortgage Loans [Abstract]
Interest rate on mortgage loans	4.50%	5.00%
Farm Loans [Member] | Maximum [Member]
Mortgage Loans [Abstract]
Interest rate on mortgage loans	4.50%	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	5.25%	7.50%
Residential Loans [Member] | Minimum [Member]
Mortgage Loans [Abstract]
Interest rate on mortgage loans	4.95%	5.50%
Residential Loans [Member] | Maximum [Member]
Mortgage Loans [Abstract]
Interest rate on mortgage loans	4.95%	5.50%