Allowance for Credit Losses - Summary of Partnerships Carrying Value by Origination Year Grouped by Risk Rating (Details) - USD ($)	Sep. 30, 2025	Dec. 31, 2024
Financing Receivable, Credit Quality Indicator [Line Items]
2025	$ 1,219,818	$ 7,250,000
2024	7,250,000	21,430,000
2023	12,100,000	194,126,911
2022	199,570,911	115,322,594
Prior	495,000	495,000
Total	220,635,729	338,624,505
Governmental Issuer Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2024		13,600,000
2023	12,100,000	90,779,628
2022	109,757,835	115,322,594
Total	121,857,835	219,702,222
Governmental Issuer Loans [Member] \| Performing [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2024		13,600,000
2023	12,100,000	90,779,628
2022	109,757,835	115,322,594
Total	121,857,835	219,702,222
Taxable Governmental Issuer Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023		13,157,672
2022	43,879,465
Total	43,879,465	13,157,672
Taxable Governmental Issuer Loans [Member] \| Performing [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023		13,157,672
2022	43,879,465
Total	43,879,465	13,157,672
Property Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2025	1,219,818	7,250,000
2024	7,250,000	7,830,000
2023		40,489,611
2022	45,933,611
Prior	495,000	495,000
Total	54,898,429	56,064,611
Property Loans [Member] \| Performing [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2025		7,250,000
2024	7,250,000	7,830,000
2023		40,489,611
2022	45,933,611
Total	53,183,611	55,569,611
Property Loans [Member] \| Nonperforming [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2025	1,219,818
Prior	495,000	495,000
Total	$ 1,714,818	495,000
Unfunded Commitments [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023		49,700,000
Total		49,700,000
Unfunded Commitments [Member] \| Performing [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023		49,700,000
Total		$ 49,700,000

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