Allowance for Credit Losses - Summary of Changes in Partnership's Allowance for Credit Losses (Details) - USD ($) |
3 Months Ended | 6 Months Ended | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2026 |
Mar. 31, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
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| Financing Receivable, Allowance for Credit Loss [Line Items] | |||||||||||||||||||
| Balance, beginning of period | $ 4,339,115 | $ 4,330,134 | $ 3,058,000 | $ 4,330,134 | $ 3,230,000 | ||||||||||||||
| Current provision for credit losses | 412,000 | (345,734) | [1] | (403,019) | [2] | 173,734 | [3] | ||||||||||||
| Recovery of prior credit loss | (22,643) | 62,224 | |||||||||||||||||
| Balance, end of period | 3,927,115 | 4,339,115 | 3,403,734 | 3,927,115 | 3,403,734 | ||||||||||||||
| MRB and taxable MRB investments [Member] | |||||||||||||||||||
| Financing Receivable, Allowance for Credit Loss [Line Items] | |||||||||||||||||||
| Balance, beginning of period | 4,157,802 | 12,875,922 | 4,111,882 | 12,875,922 | 4,128,849 | ||||||||||||||
| Current provision for credit losses | 39,419 | [4] | 2,000,000 | 8,707,000 | [4] | 2,047,440 | [4] | 8,707,000 | [4] | ||||||||||
| Write-offs | (39,419) | 0 | (6,659,560) | 0 | |||||||||||||||
| Recovery of prior credit loss | [5] | (11,523) | 79,191 | (22,643) | 62,224 | ||||||||||||||
| Balance, end of period | 4,146,279 | 4,157,802 | 12,898,073 | 4,146,279 | 12,898,073 | ||||||||||||||
| Governmental Issuer Loans [Member] | |||||||||||||||||||
| Financing Receivable, Allowance for Credit Loss [Line Items] | |||||||||||||||||||
| Balance, beginning of period | 564,000 | 609,000 | 941,000 | 609,000 | 1,038,000 | ||||||||||||||
| Current provision for credit losses | (564,000) | (245,000) | [1] | (609,000) | [2] | (342,000) | [3] | ||||||||||||
| Balance, end of period | 0 | 564,000 | 696,000 | 0 | 696,000 | ||||||||||||||
| Taxable Governmental Issuer Loans [Member] | |||||||||||||||||||
| Financing Receivable, Allowance for Credit Loss [Line Items] | |||||||||||||||||||
| Balance, beginning of period | 225,000 | 244,000 | 141,000 | 244,000 | 76,000 | ||||||||||||||
| Current provision for credit losses | 225,000 | 71,000 | [1] | (244,000) | [2] | 136,000 | [3] | ||||||||||||
| Balance, end of period | 0 | 225,000 | 212,000 | 0 | 212,000 | ||||||||||||||
| Property Loans [Member] | |||||||||||||||||||
| Financing Receivable, Allowance for Credit Loss [Line Items] | |||||||||||||||||||
| Balance, beginning of period | 3,550,115 | 3,477,134 | 1,858,000 | 3,477,134 | 1,930,000 | ||||||||||||||
| Current provision for credit losses | 377,000 | (607,734) | [1] | 449,981 | [2] | 535,734 | [3] | ||||||||||||
| Balance, end of period | 3,927,115 | 3,550,115 | 2,465,734 | 3,927,115 | 2,465,734 | ||||||||||||||
| Unfunded Commitments [Member] | |||||||||||||||||||
| Financing Receivable, Allowance for Credit Loss [Line Items] | |||||||||||||||||||
| Balance, beginning of period | 0 | 0 | 118,000 | 0 | 186,000 | ||||||||||||||
| Current provision for credit losses | (0) | (88,000) | [1] | 0 | [2] | (156,000) | [3] | ||||||||||||
| Balance, end of period | $ 0 | $ 0 | $ 30,000 | $ 0 | $ 30,000 | ||||||||||||||
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