Investments, Mortgage Loans, Investment Real Estate, Notes Receivable, and Short-Term Investments (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Mortgage Loans [Abstract]
Mortgage loans acquired, including discounted mortgage loans	$ 675,112	$ 599,189
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	$ 16,091,496		$ 16,512,981
Less allowance for credit losses	(230,000)		(235,000)
Mortgage loans, net	15,861,496		16,277,981	[1]
Investment Real Estate [Abstract]
Impairment on investment real estate	0
Total investment real estate	$ 28,705,507		$ 28,615,602	[1]
Oil & Gas Royalties - as a % of total Inv RE	19.00%		20.00%
Investment real estate acquired	$ 465,800	545,180
Notes Receivable [Abstract]
Notes receivable acquired	1,318,133	800,000
Notes receivable	14,089,905		$ 12,867,175
Less allowance for credit losses	(195,000)		(195,000)
Total notes receivable, net	13,894,905		12,672,175	[1]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	480,000	575,000	575,000
Provision for Change in Allowance	0		(95,000)
Ending balance	480,000		480,000
Short-Term Investments [Abstract]
Short-term investments acquired	0	0
Unfunded Loan Commitments [Member]
Notes Receivable [Abstract]
Less allowance for credit losses	55,000		50,000
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	50,000	51,000	51,000
Provision for Change in Allowance	5,000		(1,000)
Ending balance	55,000		50,000
Mortgage Loans [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	235,000	274,000	274,000
Provision for Change in Allowance	(5,000)		(39,000)
Ending balance	230,000		235,000
Notes Receivable [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	195,000	$ 250,000	250,000
Provision for Change in Allowance	0		(55,000)
Ending balance	$ 195,000		195,000
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	$ 16,746,147		16,446,147
Commercial [Member]
Investment Real Estate [Abstract]
Total investment real estate	4,683,185		6,269,217
Residential [Member]
Investment Real Estate [Abstract]
Total investment real estate	1,923,726		1,932,390
Land, Minerals and Royalty Interests [Member]
Investment Real Estate [Abstract]
Total investment real estate	5,352,449		3,967,848
In Good Standing [Member]
Mortgage loan holdings [Abstract]
Mortgage loans, net	15,861,496		16,277,981
Past Due [Member]
Notes Receivable [Abstract]
Notes receivable	0		0
Farm Loans [Member]
Mortgage loan holdings [Abstract]
Mortgage loans, gross	$ 316,808		$ 321,774
Farm Loans [Member] | Minimum [Member]
Mortgage Loans [Abstract]
Interest rate on mortgage loans	8.00%		8.00%
Farm Loans [Member] | Maximum [Member]
Mortgage Loans [Abstract]
Interest rate on mortgage loans	8.00%		8.00%
Commercial Loans [Member]
Mortgage loan holdings [Abstract]
Mortgage loans, gross	$ 14,346,797		$ 14,749,509
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%		10.00%
Residential Loans [Member]
Mortgage loan holdings [Abstract]
Mortgage loans, gross	$ 1,427,891		$ 1,441,698
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, 2024.