Investments, Mortgage Loans, Investment Real Estate, Notes Receivable, and Short-Term Investments (Details) - USD ($)	6 Months Ended		12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Mortgage Loans [Abstract]
Mortgage loans acquired, including discounted mortgage loans	$ 2,111,502	$ 217,864
Servicing fee on loan	0.25%
Loan origination	0.50%
Loan limit threshold for appraised property value	80.00%
Mortgage loan holdings [Abstract]
Mortgage loans, gross	$ 15,863,978		$ 15,592,176
Less allowance for credit losses	(231,000)		(274,000)
Mortgage loans, net	15,632,978		15,318,176	[1]
Investment Real Estate [Abstract]
Impairment on investment real estate	0
Total investment real estate	$ 30,244,425		$ 21,975,120	[1]
Oil & Gas Royalties - as a % of total Inv RE	22.00%		34.00%
Investment real estate acquired	$ 11,396,924	3,581,370
Notes Receivable [Abstract]
Notes receivable acquired	800,000	2,953,241
Notes receivable	14,304,559		$ 14,259,225
Less allowance for credit losses	(208,000)		(250,000)
Total notes receivable, net	14,096,559		14,009,225	[1]
Short-Term Investments [Abstract]
Short-term investments acquired	$ 950,925	$ 9,701,297
Minimum [Member]
Investment Real Estate [Abstract]
Estimated useful life	3 years
Maximum [Member]
Investment Real Estate [Abstract]
Estimated useful life	30 years
Unfunded Loan Commitments [Member]
Notes Receivable [Abstract]
Less allowance for credit losses	$ 36,000		51,000
Raw Land [Member]
Investment Real Estate [Abstract]
Total investment real estate	17,165,537		6,971,930
Commercial [Member]
Investment Real Estate [Abstract]
Total investment real estate	4,438,091		4,106,938
Residential [Member]
Investment Real Estate [Abstract]
Total investment real estate	1,949,708		3,512,408
Land, Minerals and Royalty Interests [Member]
Investment Real Estate [Abstract]
Total investment real estate	6,691,089		7,383,844
In Good Standing [Member]
Mortgage loan holdings [Abstract]
Mortgage loans, net	15,632,978		15,318,176
Past Due [Member]
Notes Receivable [Abstract]
Notes receivable	0		0
Farm Loans [Member]
Mortgage loan holdings [Abstract]
Mortgage loans, gross	$ 326,385		$ 332,417
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]
Mortgage loan holdings [Abstract]
Mortgage loans, gross	$ 14,068,452		$ 13,764,209
Commercial Loans [Member] | Minimum [Member]
Mortgage Loans [Abstract]
Interest rate on mortgage loans	4.00%		4.00%
Commercial Loans [Member] | Maximum [Member]
Mortgage Loans [Abstract]
Interest rate on mortgage loans	10.00%		8.75%
Residential Loans [Member]
Mortgage loan holdings [Abstract]
Mortgage loans, gross	$ 1,469,141		$ 1,495,550
Residential Loans [Member] | Minimum [Member]
Mortgage Loans [Abstract]
Interest rate on mortgage loans	4.15%		4.15%
Residential Loans [Member] | Maximum [Member]
Mortgage Loans [Abstract]
Interest rate on mortgage loans	5.00%		5.00%

[1] Balance sheet audited at December 31, 2023.