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Mortgage Revenue Bonds - Schedule of Investments in MRBs (Details) - USD ($) | Jun. 30, 2025 | Dec. 31, 2024
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Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 981,713,812 |  | $ 994,958,009 |
Cumulative Unrealized Gain |  | 33,562,878 |  | 35,493,084 |
Cumulative Unrealized Loss |  | (10,813,230) |  | (3,967,297) |
Estimated Fair Value |  | $ 1,004,463,460 |  | $ 1,026,483,796 |
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
The Safford [Member] | Series A [Member] | AZ [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 43,063,501 | [1] | $ 37,435,466 | [2]
Cumulative Unrealized Gain |  | 1,282,268 | [1] | 1,523,170 | [2]
Estimated Fair Value |  | $ 44,345,769 | [1] | $ 38,958,636 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
40rty on Colony - Series P [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 5,961,283 | [1] | $ 5,962,217 | [2]
Cumulative Unrealized Gain |  | 484,654 | [1] | 459,328 | [2]
Estimated Fair Value |  | $ 6,445,937 | [1] | $ 6,421,545 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Courtyard [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 9,613,640 | [3] | $ 9,668,469 | [4]
Cumulative Unrealized Gain |  | 503,183 | [3] | 449,017 | [4]
Estimated Fair Value |  | $ 10,116,823 | [3] | $ 10,117,486 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Glenview Apartments [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 4,214,763 | [5] | $ 4,248,118 | [6]
Cumulative Unrealized Gain |  | 185,843 | [5] | 170,362 | [6]
Estimated Fair Value |  | $ 4,400,606 | [5] | $ 4,418,480 | [6]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Harmony Court Bakersfield [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 3,505,266 | [3] | $ 3,525,258 | [4]
Cumulative Unrealized Gain |  | 158,054 | [3] | 127,289 | [4]
Estimated Fair Value |  | $ 3,663,320 | [3] | $ 3,652,547 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Harmony Terrace [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 6,490,501 | [3] | $ 6,527,329 | [4]
Cumulative Unrealized Gain |  | 325,040 | [3] | 288,190 | [4]
Estimated Fair Value |  | $ 6,815,541 | [3] | $ 6,815,519 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Harden Ranch [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 6,204,240 | [7] | $ 6,256,135 | [8]
Cumulative Unrealized Gain |  | 231,786 | [7] | 260,476 | [8]
Estimated Fair Value |  | $ 6,436,026 | [7] | $ 6,516,611 | [8]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Las Palmas II [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 1,589,797 | [3] | $ 1,598,957 | [4]
Cumulative Unrealized Gain |  | 75,247 | [3] | 61,427 | [4]
Estimated Fair Value |  | $ 1,665,044 | [3] | $ 1,660,384 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Lutheran Gardens [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  |  |  | $ 10,352,000 |
Estimated Fair Value |  |  |  | $ 10,352,000 |
Investment, Type [Extensible Enumeration] |  |  |  | Mortgage Revenue Bonds [Member] |
Montclair Apartments [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 2,283,373 | [5] | $ 2,301,443 | [6]
Cumulative Unrealized Gain |  | 87,511 | [5] | 98,596 | [6]
Estimated Fair Value |  | $ 2,370,884 | [5] | $ 2,400,039 | [6]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Montecito at Williams Ranch Apartments [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 7,338,517 | [7] | $ 7,374,111 | [8]
Cumulative Unrealized Gain |  | 504,232 | [7] | 424,400 | [8]
Estimated Fair Value |  | $ 7,842,749 | [7] | $ 7,798,511 | [8]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Montevista [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 6,530,210 | [7] | $ 6,556,878 | [8]
Cumulative Unrealized Gain |  | 606,936 | [7] | 602,131 | [8]
Estimated Fair Value |  | $ 7,137,146 | [7] | $ 7,159,009 | [8]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Ocotillo Springs [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 3,438,025 | [7],[9] | $ 3,455,419 | [8],[10]
Cumulative Unrealized Loss |  | (298,029) | [7],[9] | (224,262) | [8],[10]
Estimated Fair Value |  | $ 3,139,996 | [7],[9] | $ 3,231,157 | [8],[10]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Ocotillo Springs [Member] | Series A-1 [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 494,899 | [7] | $ 496,351 | [8]
Cumulative Unrealized Gain |  | 48,045 | [7] | 64,598 | [8]
Estimated Fair Value |  | $ 542,944 | [7] | $ 560,949 | [8]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
CCBA Senior Garden Apartments [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 3,701,046 | [7],[9] | $ 3,720,209 | [8],[11]
Cumulative Unrealized Loss |  | (141,648) | [7],[9] | (58,814) | [8],[11]
Estimated Fair Value |  | $ 3,559,398 | [7],[9] | $ 3,661,395 | [8],[11]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Copper Gate Apartments [Member] | IN [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 4,715,000 | [7] | $ 4,715,000 | [8]
Estimated Fair Value |  | $ 4,715,000 | [7] | $ 4,715,000 | [8]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Residency at Empire - Series BB-1 [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 14,101,672 | [1] | $ 14,109,248 | [2]
Cumulative Unrealized Gain |  | 598,763 | [1] | 491,616 | [2]
Estimated Fair Value |  | $ 14,700,435 | [1] | $ 14,600,864 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Residency at Empire - Series BB-2 [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 4,000,000 | [1] | $ 4,000,000 | [2]
Cumulative Unrealized Gain |  | 200,124 | [1] | 171,675 | [2]
Estimated Fair Value |  | $ 4,200,124 | [1] | $ 4,171,675 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Residency at Empire - Series BB-3 [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 14,000,000 | [1] | $ 14,000,000 | [2]
Cumulative Unrealized Gain |  | 557,843 | [1] | 510,453 | [2]
Estimated Fair Value |  | $ 14,557,843 | [1] | $ 14,510,453 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Residency at Empire - Series BB-4 [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 38,050,000 | [1] | $ 21,200,000 | [2]
Cumulative Unrealized Gain |  | 277,599 | [1] | 275,702 | [2]
Estimated Fair Value |  | $ 38,327,599 | [1] | $ 21,475,702 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Residency at the Entrepreneur - Series J-1 [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 9,075,521 | [1],[9] | $ 9,078,496 | [2],[11]
Cumulative Unrealized Loss |  | (563,510) | [1],[9] | (194,816) | [2],[11]
Estimated Fair Value |  | $ 8,512,011 | [1],[9] | $ 8,883,680 | [2],[11]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Residency at the Entrepreneur - Series J-2 [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 7,500,000 | [1],[9] | $ 7,500,000 | [2],[11]
Cumulative Unrealized Loss |  | (406,658) | [1],[9] | (96,933) | [2],[11]
Estimated Fair Value |  | $ 7,093,342 | [1],[9] | $ 7,403,067 | [2],[11]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Residency at the Entrepreneur - Series J-3 [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 26,080,000 | [1],[9] | $ 26,080,000 | [2],[11]
Cumulative Unrealized Loss |  | (864,653) | [1],[9] | (99,928) | [2],[11]
Estimated Fair Value |  | $ 25,215,347 | [1],[9] | $ 25,980,072 | [2],[11]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Residency at the Entrepreneur - Series J-4 [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 16,420,000 | [1] | $ 16,420,000 | [2]
Cumulative Unrealized Gain | [2] |  |  | 0 |
Estimated Fair Value |  | $ 16,420,000 | [1] | $ 16,420,000 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Residency at the Entrepreneur - Series J-5 [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 5,000,000 | [1] | $ 5,000,000 | [2]
Cumulative Unrealized Gain | [2] |  |  | 0 |
Estimated Fair Value |  | $ 5,000,000 | [1] | $ 5,000,000 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Solano Vista [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 2,580,950 | [7] | $ 2,591,588 | [8]
Cumulative Unrealized Gain |  | 239,876 | [7] | 172,312 | [8]
Estimated Fair Value |  | $ 2,820,826 | [7] | $ 2,763,900 | [8]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Residency at the Mayer [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 29,555,010 | [1] | $ 29,556,596 | [2]
Estimated Fair Value |  | $ 29,555,010 | [1] | $ 29,556,596 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Residency at the Mayer [Member] | Series M [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 11,500,000 | [1] | $ 11,500,000 | [2]
Estimated Fair Value |  | $ 11,500,000 | [1] | $ 11,500,000 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
San Vicente [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 3,278,077 | [3] | $ 3,296,965 | [4]
Cumulative Unrealized Gain |  | 155,155 | [3] | 135,060 | [4]
Estimated Fair Value |  | $ 3,433,232 | [3] | $ 3,432,025 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bond [Member] |  | Mortgage Revenue Bond [Member] |
Santa Fe Apartments [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 2,766,220 | [5] | $ 2,788,112 | [6]
Cumulative Unrealized Gain |  | 118,773 | [5] | 123,270 | [6]
Estimated Fair Value |  | $ 2,884,993 | [5] | $ 2,911,382 | [6]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Seasons at Simi Valley [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 3,995,972 | [3] | $ 4,025,911 | [4]
Cumulative Unrealized Gain |  | 288,534 | [3] | 272,883 | [4]
Estimated Fair Value |  | $ 4,284,506 | [3] | $ 4,298,794 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Seasons Lakewood [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 6,913,794 | [3] | $ 6,953,024 | [4]
Cumulative Unrealized Gain |  | 346,238 | [3] | 306,985 | [4]
Estimated Fair Value |  | $ 7,260,032 | [3] | $ 7,260,009 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Seasons San Juan Capistrano [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 11,640,572 | [3] | $ 11,706,622 | [4]
Cumulative Unrealized Gain |  | 582,951 | [3] | 516,863 | [4]
Estimated Fair Value |  | $ 12,223,523 | [3] | $ 12,223,485 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Summerhill [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 6,036,012 | [3] | $ 6,070,437 | [4]
Cumulative Unrealized Gain |  | 72,380 | [3] | 20,122 | [4]
Estimated Fair Value |  | $ 6,108,392 | [3] | $ 6,090,559 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Sycamore Walk [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 3,303,881 | [3] | $ 3,330,230 | [4]
Cumulative Unrealized Gain |  | 147,797 | [3] | 44,181 | [4]
Estimated Fair Value |  | $ 3,451,678 | [3] | $ 3,374,411 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
The Village at Madera [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 2,899,128 | [3] | $ 2,915,662 | [4]
Cumulative Unrealized Gain |  | 130,723 | [3] | 112,779 | [4]
Estimated Fair Value |  | $ 3,029,851 | [3] | $ 3,028,441 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Tyler Park Townhomes [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 5,399,954 | [7] | $ 5,445,686 | [8]
Cumulative Unrealized Gain | [8] |  |  | 0 |
Estimated Fair Value |  | $ 5,399,954 | [7] | $ 5,445,686 | [8]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Village at Hanford Square [Member] | Series H [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 10,400,000 | [1] | $ 10,400,000 | [2]
Cumulative Unrealized Gain |  | 679,006 | [1] | 619,721 | [2]
Estimated Fair Value |  | $ 11,079,006 | [1] | $ 11,019,721 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Vineyard Gardens | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 3,821,712 | [7] | $ 3,839,951 | [8]
Cumulative Unrealized Gain |  | 284,395 | [7] | 281,057 | [8]
Estimated Fair Value |  | $ 4,106,107 | [7] | $ 4,121,008 | [8]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Westside Village Market [Member] | Series A [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 3,528,860 | [7] | $ 3,558,747 | [8]
Cumulative Unrealized Gain |  | 159,448 | [7] | 132,773 | [8]
Estimated Fair Value |  | $ 3,688,308 | [7] | $ 3,691,520 | [8]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Handsel Morgan Village Apartments [Member] | GA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 2,150,000 | [1] | $ 2,150,000 | [2]
Cumulative Unrealized Gain |  | 296,084 | [1] | 162,887 | [2]
Estimated Fair Value |  | $ 2,446,084 | [1] | $ 2,312,887 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
MaryAlice Circle Apartments [Member] | GA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 5,900,000 | [1] | $ 5,900,000 | [2]
Cumulative Unrealized Gain |  | 369,455 | [1] | 496,763 | [2]
Estimated Fair Value |  | $ 6,269,455 | [1] | $ 6,396,763 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Renaissance [Member] | Series A [Member] | LA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 10,177,196 | [5] | $ 10,263,789 | [6],[11]
Cumulative Unrealized Loss |  | (1,041,985) | [5] | (836,645) | [6],[11]
Estimated Fair Value |  | $ 9,135,211 | [5] | $ 9,427,144 | [6],[11]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Live 929 Apartments [Member] | Series 2022A [Member] | MD [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 58,377,018 | [1] | $ 58,560,655 | [2]
Cumulative Unrealized Gain |  | 4,169,341 | [1] | 3,547,694 | [2]
Estimated Fair Value |  | $ 62,546,359 | [1] | $ 62,108,349 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Woodington Gardens Apartments [Member] | Series A-1 [Member] | MD [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 31,150,000 | [1] | $ 31,150,000 | [2]
Cumulative Unrealized Gain |  | 3,147,615 | [1] | 3,112,265 | [2]
Estimated Fair Value |  | $ 34,297,615 | [1] | $ 34,262,265 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Meadow Valley [Member] | MI [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 42,588,565 | [1],[12] | $ 41,162,263 | [2],[13]
Cumulative Unrealized Loss |  | (1,238,735) | [1],[12] | (1,859,135) | [2],[13]
Estimated Fair Value |  | $ 41,349,830 | [1],[12] | $ 39,303,128 | [2],[13]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Jackson Manor Apartments [member] | MS [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 4,758,739 | [7],[14] | $ 4,781,136 | [8]
Cumulative Unrealized Gain | [8] |  |  | 19,919 |
Cumulative Unrealized Loss | [7],[14] | (254,327) |  |  |
Estimated Fair Value |  | $ 4,504,412 | [7],[14] | $ 4,801,055 | [8]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Village Point [Member] | NJ [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 22,991,000 | [9],[15] | $ 23,000,000 | [11],[16]
Cumulative Unrealized Loss |  | (191,837) | [9],[15] | (447,248) | [11],[16]
Estimated Fair Value |  | $ 22,799,163 | [9],[15] | $ 22,552,752 | [11],[16]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Wellspring Apartments [Member] | CA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 3,820,907 | [7] | $ 3,880,455 | [8]
Cumulative Unrealized Gain |  | 59,531 | [7] | 119,584 | [8]
Estimated Fair Value |  | $ 3,880,438 | [7] | $ 4,000,039 | [8]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Silver Moon [Member] | Series A [Member] | NM [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 7,356,190 | [5] | $ 7,398,857 | [6]
Cumulative Unrealized Gain |  | 614,713 | [5] | 571,694 | [6]
Estimated Fair Value |  | $ 7,970,903 | [5] | $ 7,970,551 | [6]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Village at Avalon [Member] | NM [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 15,591,463 | [7] | $ 15,665,803 | [8]
Cumulative Unrealized Gain |  | 1,241,455 | [7] | 1,241,389 | [8]
Estimated Fair Value |  | $ 16,832,918 | [7] | $ 16,907,192 | [8]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Columbia Gardens [Member] | SC [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 12,045,725 | [3] | $ 12,150,488 | [4]
Cumulative Unrealized Gain |  | 502,074 | [3] | 502,113 | [4]
Estimated Fair Value |  | $ 12,547,799 | [3] | $ 12,652,601 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Companion at Thornhill Apartments [Member] | SC [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances | [4] |  |  | $ 10,484,096 |
Cumulative Unrealized Gain | [4] |  |  | 338,831 |
Estimated Fair Value | [4] |  |  | 10,822,927 |
The Ivy Apartments [Member] | SC [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 30,553,487 | [1],[9] | 30,558,423 | [2]
Cumulative Unrealized Gain | [2] |  |  | 822,638 |
Cumulative Unrealized Loss | [1],[9] | (727,048) |  |  |
Estimated Fair Value |  | $ 29,826,439 | [1],[9] | $ 31,381,061 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
The Palms at Premier Park Apartment [Member] | SC [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances | [8] |  |  | $ 17,590,997 |
Cumulative Unrealized Gain | [8] |  |  | 27,389 |
Estimated Fair Value | [8] |  |  | 17,618,386 |
The Park at Sondrio [Member] | Series 2022A [Member] | SC [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 32,847,700 | [1],[17] | 38,100,000 | [2]
Cumulative Unrealized Gain | [2] |  |  | 1,260,209 |
Cumulative Unrealized Loss | [1],[17] | (783,058) |  |  |
Estimated Fair Value |  | $ 32,064,642 | [1],[17] | $ 39,360,209 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
The Park at Vietti [Member] | Series 2022A [Member] | SC [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 26,244,500 | [1],[17] | $ 26,985,000 | [2]
Cumulative Unrealized Gain | [2] |  |  | 952,281 |
Cumulative Unrealized Loss | [1],[17] | (3,032,175) |  |  |
Estimated Fair Value |  | $ 23,212,325 | [1],[17] | $ 27,937,281 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Village at River's Edge [Member] | SC [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 9,431,025 | [3] | $ 9,477,407 | [4]
Cumulative Unrealized Gain |  | 148,546 | [3] | 832,313 | [4]
Estimated Fair Value |  | $ 9,579,571 | [3] | $ 10,309,720 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Willow Run [Member] | SC [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 11,878,606 | [3] | $ 11,981,345 | [4]
Cumulative Unrealized Gain |  | 480,849 | [3] | 494,536 | [4]
Estimated Fair Value |  | $ 12,359,455 | [3] | $ 12,475,881 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Windsor Shores Apartments [Member] | Series A [Member] | SC [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 19,097,900 | [1],[17] | $ 21,545,000 | [2]
Cumulative Unrealized Gain | [2] |  |  | 718,755 |
Cumulative Unrealized Loss | [1],[17] | (1,093,134) |  |  |
Estimated Fair Value |  | $ 18,004,766 | [1],[17] | $ 22,263,755 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Agape Helotes [Member] | Series A-1 [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances | [1] | $ 5,547,270 |  |  |
Cumulative Unrealized Gain | [1] | 887,957 |  |  |
Estimated Fair Value | [1] | $ 6,435,227 |  |  |
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Agape Helotes [Member] | Series B [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances | [1],[17] | $ 7,330,652 |  |  |
Cumulative Unrealized Loss | [1],[17] | (176,433) |  |  |
Estimated Fair Value | [1],[17] | $ 7,154,219 |  |  |
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Avistar at Copperfield [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 13,129,768 | [1] | $ 13,215,029 | [2]
Cumulative Unrealized Gain |  | 596,271 | [1] | 485,574 | [2]
Estimated Fair Value |  | $ 13,726,039 | [1] | $ 13,700,603 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Avistar at the Crest [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 8,546,896 | [1] | $ 8,621,036 | [2]
Cumulative Unrealized Gain |  | 518,508 | [1] | 471,417 | [2]
Estimated Fair Value |  | $ 9,065,404 | [1] | $ 9,092,453 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Avistar at the Crest [Member] | Series B [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 707,563 |  | $ 711,315 |
Cumulative Unrealized Gain |  | 28,358 |  | 24,748 |
Estimated Fair Value |  | $ 735,921 |  | $ 736,063 |
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Avistar at the Oaks [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 6,922,572 | [1] | $ 6,980,721 | [2]
Cumulative Unrealized Gain |  | 296,008 | [1] | 333,795 | [2]
Estimated Fair Value |  | $ 7,218,580 | [1] | $ 7,314,516 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Avistar at the Oaks [Member] | Series B [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 518,746 |  | $ 521,384 |
Cumulative Unrealized Gain |  |  |  | 14,194 |
Estimated Fair Value |  | $ 518,746 |  | $ 535,578 |
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Avistar at the Parkway [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 12,013,272 | [5] | $ 12,101,645 | [6]
Cumulative Unrealized Gain |  | 457,614 | [5] | 422,358 | [6]
Estimated Fair Value |  | $ 12,470,886 | [5] | $ 12,524,003 | [6]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Avistar at the Parkway [Member] | Series B [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 121,873 |  | $ 122,165 |
Cumulative Unrealized Gain |  | 12,411 |  | 13,232 |
Estimated Fair Value |  | $ 134,284 |  | $ 135,397 |
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Avistar at Wilcrest [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 4,975,916 | [1] | $ 5,008,228 | [2]
Cumulative Unrealized Gain |  | 16,459 | [1] | 155,503 | [2]
Estimated Fair Value |  | $ 4,992,375 | [1] | $ 5,163,731 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Avistar at Wood Hollow [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 37,782,019 | [1] | $ 38,027,363 | [2]
Cumulative Unrealized Gain |  | 1,650,782 | [1] | 1,397,281 | [2]
Estimated Fair Value |  | $ 39,432,801 | [1] | $ 39,424,644 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Avistar in 09 [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 5,977,367 | [1] | $ 6,027,577 | [2]
Cumulative Unrealized Gain |  | 308,167 | [1] | 302,568 | [2]
Estimated Fair Value |  | $ 6,285,534 | [1] | $ 6,330,145 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Avistar in 09 [Member] | Series B [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 427,919 |  | $ 430,095 |
Cumulative Unrealized Gain |  | 14,674 |  | 12,653 |
Estimated Fair Value |  | $ 442,593 |  | $ 442,748 |
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Avistar on the Boulevard [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 14,560,568 | [1] | $ 14,686,873 | [2]
Cumulative Unrealized Gain |  | 643,471 | [1] | 671,717 | [2]
Estimated Fair Value |  | $ 15,204,039 | [1] | $ 15,358,590 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Avistar on the Boulevard [Member] | Series B [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 420,436 |  | $ 422,666 |
Cumulative Unrealized Gain |  | 13,610 |  | 12,072 |
Estimated Fair Value |  | $ 434,046 |  | $ 434,738 |
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Avistar on the Hills [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 4,739,346 | [1] | $ 4,779,156 | [2]
Cumulative Unrealized Gain |  | 244,340 | [1] | 251,307 | [2]
Estimated Fair Value |  | $ 4,983,686 | [1] | $ 5,030,463 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Bruton Apartments [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 16,961,350 | [3] | $ 17,050,526 | [4]
Estimated Fair Value |  | $ 16,961,350 | [3] | $ 17,050,526 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Concord at Gulfgate [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 17,844,362 | [3] | $ 17,963,286 | [4]
Cumulative Unrealized Gain |  | 1,036,045 | [3] | 938,146 | [4]
Estimated Fair Value |  | $ 18,880,407 | [3] | $ 18,901,432 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Concord at Little York [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 12,500,819 | [3] | $ 12,584,132 | [4]
Cumulative Unrealized Gain |  | 780,574 | [3] | 716,639 | [4]
Estimated Fair Value |  | $ 13,281,393 | [3] | $ 13,300,771 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Concord at Williamcrest [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 19,365,109 | [3] | $ 19,494,168 | [4]
Cumulative Unrealized Gain |  | 1,166,716 | [3] | 1,064,065 | [4]
Estimated Fair Value |  | $ 20,531,825 | [3] | $ 20,558,233 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Crossing at 1415 [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 6,940,324 | [3] | $ 6,989,209 | [4]
Cumulative Unrealized Gain |  | 237,019 | [3] | 179,154 | [4]
Estimated Fair Value |  | $ 7,177,343 | [3] | $ 7,168,363 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Decatur-Angle [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 21,290,546 | [3] | $ 21,412,592 | [4],[11]
Cumulative Unrealized Loss | [4],[11] |  |  | (149,516) |
Estimated Fair Value |  | $ 21,290,546 | [3] | $ 21,263,076 | [4],[11]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Esperanza at Palo Alto [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 18,485,484 | [3] | $ 18,576,657 | [4]
Cumulative Unrealized Gain |  | 1,267,732 | [3] | 1,168,859 | [4]
Estimated Fair Value |  | $ 19,753,216 | [3] | $ 19,745,516 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Heights at 515 [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 6,353,986 | [3] | $ 6,398,741 | [4]
Cumulative Unrealized Gain |  | 302,708 | [3] | 312,241 | [4]
Estimated Fair Value |  | $ 6,656,694 | [3] | $ 6,710,982 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Heritage Square [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 9,962,004 | [5] | $ 10,039,053 | [6]
Cumulative Unrealized Gain |  | 251,362 | [5] | 307,888 | [6]
Estimated Fair Value |  | $ 10,213,366 | [5] | $ 10,346,941 | [6]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Oaks at Georgetown [Member] | Series A [Member] | TX [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 11,598,243 | [3] | $ 11,664,053 | [4]
Cumulative Unrealized Gain |  | 385,731 | [3] | 214,123 | [4]
Estimated Fair Value |  | $ 11,983,974 | [3] | $ 11,878,176 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
15 West Apartments [Member] | WA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 9,237,985 | [3] | $ 9,283,990 | [4]
Cumulative Unrealized Gain |  | 1,012,049 | [3] | 1,025,529 | [4]
Estimated Fair Value |  | $ 10,250,034 | [3] | $ 10,309,519 | [4]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
Aventine Apartments [Member] | WA [Member] |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 9,500,000 | [1] | $ 9,500,000 | [2]
Cumulative Unrealized Gain |  | 1,072,245 | [1] | 1,060,325 | [2]
Estimated Fair Value |  | $ 10,572,245 | [1] | $ 10,560,325 | [2]
Investment, Type [Extensible Enumeration] |  | Mortgage Revenue Bonds [Member] |  | Mortgage Revenue Bonds [Member] |
[1] | MRB held by Mizuho in a debt financing transaction, Note 13.
[2] | MRB held by Mizuho in a TOB trust financing transaction, Note 13.
[3] | MRB owned by ATAX TEBS IV, LLC (M45 TEBS), Note 13. The TEBS financing has contractual limitations on the Partnership’s ability to sell the MRB.
[4] | MRB owned by ATAX TEBS IV, LLC (M45 TEBS), Note 13. The TEBS financing has contractual limitations on the Partnership’s ability to sell the MRB.
[5] | MRB owned by ATAX TEBS III, LLC (M33 TEBS), Note 13. The TEBS financing has contractual limitations on the Partnership’s ability to sell the MRB.
[6] | MRB owned by ATAX TEBS III, LLC (M33 TEBS), Note 13. The TEBS financing has contractual limitations on the Partnership’s ability to sell the MRB.
[7] | 2024 PFA Securitization Bond associated with the 2024 PFA Securitization Transaction, Note 13.
[8] | 2024 PFA Securitization Bond associated with the 2024 PFA Securitization Transaction, Note 13.
[9] | As of the date presented, the Partnership determined that the unrealized loss on the MRB is a result of increasing market interest rates and is not considered a credit loss. As of June 30, 2025, the MRB has been in an unrealized loss position for at least 12 months.
[10] | As of the date presented, the Partnership determined that the unrealized loss on the MRB is a result of increasing market interest rates and is not considered a credit loss. As of December 31, 2024, the MRB has been in an unrealized loss position for at least 12 months.
[11] | As of the date presented, the Partnership determined that the unrealized loss on the MRB is a result of increasing market interest rates and is not considered a credit loss. As of December 31, 2024, the MRB has been in an unrealized loss position for less than 12 months.
[12] | The Partnership has a remaining MRB funding commitment of approximately $1.5 million as of June 30, 2025. The MRB and the unfunded MRB commitment are accounted for as available-for-sale securities and reported at fair value. The reported unrealized loss includes the unrealized loss on the current MRB carrying value (based on current fair value) as well as the unrealized loss on the Partnership’s remaining funding commitment outstanding as of June 30, 2025 (also based on current fair value). The Partnership determined the unrealized loss is a result of increasing market interest rates and that the cumulative unrealized loss is not considered a credit loss. As of June 30, 2025, the MRB has been in an unrealized loss position for more than 12 months.
[13] | The Partnership has a remaining MRB funding commitment of approximately $2.9 million as of December 31, 2024. The MRB and the unfunded MRB commitment are accounted for as available-for-sale securities and reported at fair value. The reported unrealized loss includes the unrealized loss on the current MRB carrying value (based on current fair value) as well as the unrealized loss on the Partnership’s remaining funding commitment outstanding as of December 31, 2024 (also based on current fair value). The Partnership determined the unrealized loss is a result of increasing market interest rates and that the cumulative unrealized loss is not considered a credit loss. As of December 31, 2024, the MRB has been in an unrealized loss position for more than 12 months.
[14] | As of the date presented, the Partnership determined that the unrealized loss on the MRB is a result of increasing market interest rates and is not considered a credit loss. As of June 30, 2025, the MRB has been in an unrealized loss position for less than 12 months.
[15] | MRB held by Barclays in a debt financing transaction, Note 13.
[16] | MRB held by Barclays in a debt financing transaction, Note 13.
[17] | As of the date presented, the Partnership determined that the unrealized loss on the MRB is not a result of expected shortfalls in discounted cash flows. See Notes 2 and 10 for discussion of the provision for credit loss associated with the MRB. As of June 30, 2025, the MRB has been in an unrealized loss position for less than 12 months.

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