Investments, Mortgage Loans, Investment Real Estate, and Notes Receivable (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Cost Method Investments [Abstract]
Equity Securities without Readily Determinable Fair Value, Amount	$ 10,417,247		$ 10,919,247	[1]
Mortgage Loans [Abstract]
Mortgage loans acquired, including discounted mortgage loans	$ 931,378		3,575,500
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	9,099,364		8,223,286
Total mortgage loans	$ 9,099,364		$ 8,223,286	[1]
Investment Real Estate [Abstract]
Investments in oil/gas royalties as a % of total investment real estate portfolio	43.00%		44.00%
Investment real estate acquired	$ 0	$ 1,174,688
Notes Receivable [Abstract]
Valuation allowance	0		$ 0
Notes Receivable acquired	$ 3,500,000	$ 4,416,008
Farm Loans [Member] | Maximum [Member]
Mortgage Loans [Abstract]
Interest rate on mortgage loans	5.00%		5.00%
Farm Loans [Member] | Minimum [Member]
Mortgage Loans [Abstract]
Interest rate on mortgage loans	5.00%		5.00%
Commercial Loans [Member] | Maximum [Member]
Mortgage Loans [Abstract]
Interest rate on mortgage loans	7.50%		7.50%
Commercial Loans [Member] | Minimum [Member]
Mortgage Loans [Abstract]
Interest rate on mortgage loans	4.24%		4.82%
Residential Loans [Member] | Maximum [Member]
Mortgage Loans [Abstract]
Interest rate on mortgage loans	5.50%		8.00%
Residential Loans [Member] | Minimum [Member]
Mortgage Loans [Abstract]
Interest rate on mortgage loans	5.50%		8.00%

[1] Balance sheet audited at December 31, 2018.