Allowance for Credit Losses - Summary of Partnerships Carrying Value by Origination Year Grouped by Risk Rating (Details)	Jun. 30, 2023 USD ($)
Financing Receivable, Credit Quality Indicator [Line Items]
2022	$ 222,819,605
2021	291,421,862
2020	104,024,420
2019	495,000
Prior	453,594
Total	619,214,481
Governmental Issuer Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2022	51,837,300
2021	179,092,603
2020	73,080,000
Total	304,009,903
Governmental Issuer Loans [Member] \| Performing [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2022	51,837,300
2021	179,092,603
2020	73,080,000
Total	304,009,903
Taxable Governmental Issuer Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2022	3,000,000
2021	10,573,000
Total	13,573,000
Taxable Governmental Issuer Loans [Member] \| Performing [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2022	3,000,000
2021	10,573,000
Total	13,573,000
Property Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2022	48,782,305
2021	64,462,943
2020	30,944,420
2019	495,000
Prior	453,594
Total	145,138,262
Property Loans [Member] \| Performing [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2022	48,782,305
2021	64,462,943
2020	30,944,420
Prior	453,594
Total	144,643,262
Property Loans [Member] \| Nonperforming [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2019	495,000
Total	495,000
Unfunded Commitments [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2022	119,200,000
2021	37,293,316
Total	156,493,316
Unfunded Commitments [Member] \| Performing [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2022	119,200,000
2021	37,293,316
Total	$ 156,493,316

Amortized cost of financing receivable originated more than five years prior to current fiscal year. Excludes net investment in lease.

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