Allowance for Credit Losses - Summary of Partnerships Carrying Value by Origination Year Grouped by Risk Rating (Details)	Mar. 31, 2023 USD ($)
Financing Receivable, Credit Quality Indicator [Line Items]
2022	$ 228,502,615
2021	291,421,862
2020	165,728,600
2019	495,000
Prior	453,594
Total	686,601,671
Governmental Issuer Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2022	42,337,300
2021	168,190,438
2020	107,080,000
Total	317,607,738
Governmental Issuer Loans [Member] | Performing [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2022	42,337,300
2021	168,190,438
2020	107,080,000
Total	317,607,738
Taxable Governmental Issuer Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2022	3,000,000
2021	8,000,000
Total	11,000,000
Taxable Governmental Issuer Loans [Member] | Performing [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2022	3,000,000
2021	8,000,000
Total	11,000,000
Property Loans [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2022	54,465,315
2021	54,854,469
2020	54,963,077
2019	495,000
Prior	453,594
Total	165,231,455
Property Loans [Member] | Performing [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2022	54,465,315
2021	54,854,469
2020	54,963,077
Prior	453,594
Total	164,736,455
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	128,700,000
2021	60,376,955
2020	3,685,523
Total	192,762,478
Unfunded Commitments [Member] | Performing [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2022	128,700,000
2021	60,376,955
2020	3,685,523
Total	$ 192,762,478