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Mortgage Revenue Bonds - Schedule of Investments in MRBs (Details) - USD ($) | Mar. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
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Mortgage Revenue Bonds Held In Trust [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | $ 784,224,320 |  | $ 718,413,130 |  |
Cumulative Unrealized Gain |  | 64,481,526 |  | 45,127,126 |  |
Cumulative Unrealized Loss |  | (173,588) |  | (331,311) |  |
Estimated Fair Value |  | 848,532,258 |  | 763,208,945 |  |
Mortgage Revenue Bonds Held In Trust [Member] | Courtyard [Member] | Series A [Member] | CA [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 9,849,947 | [1] | 9,874,603 | [2] |
Cumulative Unrealized Gain |  | 1,087,127 | [1] | 888,242 | [2] |
Estimated Fair Value |  | 10,937,074 | [1] | 10,762,845 | [2] |
Mortgage Revenue Bonds Held In Trust [Member] | Glenview Apartments [Member] | Series A [Member] | CA [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 4,357,607 | [3] | 4,372,370 | [4] |
Cumulative Unrealized Gain |  | 371,120 | [3] | 309,570 | [4] |
Estimated Fair Value |  | 4,728,727 | [3] | 4,681,940 | [4] |
Mortgage Revenue Bonds Held In Trust [Member] | Harmony Court Bakersfield [Member] | Series A [Member] | CA [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 3,591,428 | [1] | 3,600,418 | [2] |
Cumulative Unrealized Gain |  | 347,292 | [1] | 274,456 | [2] |
Estimated Fair Value |  | 3,938,720 | [1] | 3,874,874 | [2] |
Mortgage Revenue Bonds Held In Trust [Member] | Harmony Terrace [Member] | Series A [Member] | CA [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 6,649,226 | [1] | 6,665,787 | [2] |
Cumulative Unrealized Gain |  | 761,012 | [1] | 625,752 | [2] |
Estimated Fair Value |  | 7,410,238 | [1] | 7,291,539 | [2] |
Mortgage Revenue Bonds Held In Trust [Member] | Harden Ranch [Member] | Series A [Member] | CA [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 6,426,485 | [5] | 6,449,455 | [6] |
Cumulative Unrealized Gain |  | 620,378 | [5] | 581,466 | [6] |
Estimated Fair Value |  | 7,046,863 | [5] | 7,030,921 | [6] |
Mortgage Revenue Bonds Held In Trust [Member] | Las Palmas II [Member] | Series A [Member] | CA [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 1,629,277 | [1] | 1,633,397 | [2] |
Cumulative Unrealized Gain |  | 173,217 | [1] | 140,681 | [2] |
Estimated Fair Value |  | 1,802,494 | [1] | 1,774,078 | [2] |
Mortgage Revenue Bonds Held In Trust [Member] | Lutheran Gardens [Member] | CA [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances | [7],[8] | 10,352,000 |  |  |  |
Cumulative Unrealized Loss | [7],[8] | (30,868) |  |  |  |
Estimated Fair Value | [7],[8] | 10,321,132 |  |  |  |
Mortgage Revenue Bonds Held In Trust [Member] | Montclair Apartments [Member] | Series A [Member] | CA [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 2,360,759 | [3] | 2,368,757 | [4] |
Cumulative Unrealized Gain |  | 221,592 | [3] | 199,617 | [4] |
Estimated Fair Value |  | 2,582,351 | [3] | 2,568,374 | [4] |
Mortgage Revenue Bonds Held In Trust [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 |  | 7,491,273 | [9] | 7,507,111 | [10] |
Cumulative Unrealized Gain |  | 1,002,626 | [9] | 834,292 | [10] |
Estimated Fair Value |  | 8,493,899 | [9] | 8,341,403 | [10] |
Mortgage Revenue Bonds Held In Trust [Member] | Montevista [Member] | Series A [Member] | CA [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 6,644,416 | [9] | 6,656,219 | [10] |
Cumulative Unrealized Gain |  | 1,106,804 | [9] | 902,690 | [10] |
Estimated Fair Value |  | 7,751,220 | [9] | 7,558,909 | [10] |
Mortgage Revenue Bonds Held In Trust [Member] | Ocotillo Springs [Member] | Series A [Member] | CA [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 11,090,000 | [9],[11] | 11,090,000 | [10],[12] |
Cumulative Unrealized Loss |  | (142,720) | [9],[11] | (331,311) | [10],[12] |
Estimated Fair Value |  | 10,947,280 | [9],[11] | 10,758,689 | [10],[12] |
Mortgage Revenue Bonds Held In Trust [Member] | Residency at Empire - Series BB-1 [Member] | CA [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances | [9] | 14,118,500 |  |  |  |
Cumulative Unrealized Gain | [9] | 1,389,537 |  |  |  |
Estimated Fair Value | [9] | 15,508,037 |  |  |  |
Mortgage Revenue Bonds Held In Trust [Member] | Residency at Empire - Series BB-2 [Member] | CA [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances | [9] | 4,000,000 |  |  |  |
Cumulative Unrealized Gain | [9] | 430,868 |  |  |  |
Estimated Fair Value | [9] | 4,430,868 |  |  |  |
Mortgage Revenue Bonds Held In Trust [Member] | Residency at the Entrepreneur J -1 [Member] | CA [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 9,088,272 | [9] | 9,088,496 | [10] |
Cumulative Unrealized Gain |  | 174,524 | [9] | 122,815 | [10] |
Estimated Fair Value |  | 9,262,796 | [9] | 9,211,311 | [10] |
Mortgage Revenue Bonds Held In Trust [Member] | Residency at the Entrepreneur J -2 [Member] | CA [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 7,500,000 | [9] | 7,500,000 | [10] |
Cumulative Unrealized Gain |  | 218,996 | [9] | 176,092 | [10] |
Estimated Fair Value |  | 7,718,996 | [9] | 7,676,092 | [10] |
Mortgage Revenue Bonds Held In Trust [Member] | Residency at the Entrepreneur J -3 [Member] | CA [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 4,900,000 | [9] | 3,900,000 | [10] |
Cumulative Unrealized Gain |  | 696,071 | [9] | 726,834 | [10] |
Estimated Fair Value |  | 5,596,071 | [9] | 4,626,834 | [10] |
Mortgage Revenue Bonds Held In Trust [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 |  | 29,565,978 | [9] | 26,067,585 | [10] |
Estimated Fair Value |  | 29,565,978 | [9] | 26,067,585 | [10] |
Mortgage Revenue Bonds Held In Trust [Member] | San Vicente [Member] | Series A [Member] | CA [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 3,359,484 | [1] | 3,367,978 | [2] |
Cumulative Unrealized Gain |  | 323,116 | [1] | 255,787 | [2] |
Estimated Fair Value |  | 3,682,600 | [1] | 3,623,765 | [2] |
Mortgage Revenue Bonds Held In Trust [Member] | Santa Fe Apartments [Member] | Series A [Member] | CA [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 2,859,971 | [3] | 2,869,660 | [4] |
Cumulative Unrealized Gain |  | 243,572 | [3] | 216,000 | [4] |
Estimated Fair Value |  | 3,103,543 | [3] | 3,085,660 | [4] |
Mortgage Revenue Bonds Held In Trust [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 |  | 4,124,186 | [1] | 4,137,438 | [2] |
Cumulative Unrealized Gain |  | 579,812 | [1] | 522,910 | [2] |
Estimated Fair Value |  | 4,703,998 | [1] | 4,660,348 | [2] |
Mortgage Revenue Bonds Held In Trust [Member] | Seasons Lakewood [Member] | Series A [Member] | CA [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 7,082,871 | [1] | 7,100,512 | [2] |
Cumulative Unrealized Gain |  | 810,644 | [1] | 666,562 | [2] |
Estimated Fair Value |  | 7,893,515 | [1] | 7,767,074 | [2] |
Mortgage Revenue Bonds Held In Trust [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 |  | 11,925,242 | [1] | 11,954,944 | [2] |
Cumulative Unrealized Gain |  | 1,282,002 | [1] | 1,038,904 | [2] |
Estimated Fair Value |  | 13,207,244 | [1] | 12,993,848 | [2] |
Mortgage Revenue Bonds Held In Trust [Member] | Summerhill [Member] | Series A [Member] | CA [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 6,184,380 | [1] | 6,199,861 | [2] |
Cumulative Unrealized Gain |  | 271,726 | [1] | 265,296 | [2] |
Estimated Fair Value |  | 6,456,106 | [1] | 6,465,157 | [2] |
Mortgage Revenue Bonds Held In Trust [Member] | Sycamore Walk [Member] | Series A [Member] | CA [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 3,417,200 | [1] | 3,428,986 | [2] |
Cumulative Unrealized Gain |  | 242,738 | [1] | 124,598 | [2] |
Estimated Fair Value |  | 3,659,938 | [1] | 3,553,584 | [2] |
Mortgage Revenue Bonds Held In Trust [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 |  | 2,970,390 | [1] | 2,977,825 | [2] |
Cumulative Unrealized Gain |  | 307,465 | [1] | 247,354 | [2] |
Estimated Fair Value |  | 3,277,855 | [1] | 3,225,179 | [2] |
Mortgage Revenue Bonds Held In Trust [Member] | Tyler Park Townhomes [Member] | Series A [Member] | CA [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 5,595,802 | [5] | 5,616,043 | [6] |
Cumulative Unrealized Gain |  | 261,392 | [5] | 264,300 | [6] |
Estimated Fair Value |  | 5,857,194 | [5] | 5,880,343 | [6] |
Mortgage Revenue Bonds Held In Trust [Member] | Vineyard Gardens | Series A [Member] | CA [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 3,899,988 | [9] | 3,908,104 | [10] |
Cumulative Unrealized Gain |  | 607,120 | [9] | 514,719 | [10] |
Estimated Fair Value |  | 4,507,108 | [9] | 4,422,823 | [10] |
Mortgage Revenue Bonds Held In Trust [Member] | Westside Village Market [Member] | Series A [Member] | CA [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 3,656,848 | [5] | 3,670,075 | [6] |
Cumulative Unrealized Gain |  | 318,591 | [5] | 267,369 | [6] |
Estimated Fair Value |  | 3,975,439 | [5] | 3,937,444 | [6] |
Mortgage Revenue Bonds Held In Trust [Member] | Brookstone [Member] | IL [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 7,272,720 | [13] | 7,286,052 | [14] |
Cumulative Unrealized Gain |  | 1,260,408 | [13] | 1,286,871 | [14] |
Estimated Fair Value |  | 8,533,128 | [13] | 8,572,923 | [14] |
Mortgage Revenue Bonds Held In Trust [Member] | Copper Gate Apartments [Member] | IN [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 4,840,000 | [5] | 4,840,000 | [6] |
Cumulative Unrealized Gain |  | 96,546 | [5] | 117,014 | [6] |
Estimated Fair Value |  | 4,936,546 | [5] | 4,957,014 | [6] |
Mortgage Revenue Bonds Held In Trust [Member] | Renaissance [Member] | Series A [Member] | LA [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 10,547,250 | [3] | 10,585,375 | [4] |
Cumulative Unrealized Gain |  | 1,087,763 | [3] | 645,412 | [4] |
Estimated Fair Value |  | 11,635,013 | [3] | 11,230,787 | [4] |
Mortgage Revenue Bonds Held In Trust [Member] | Live 929 Apartments [Member] | Series 2022A [Member] | MD [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 58,163,081 | [9] | 58,107,262 | [10] |
Cumulative Unrealized Gain |  | 2,955,764 | [9] | 2,217,857 | [10] |
Estimated Fair Value |  | 61,118,845 | [9] | 60,325,119 | [10] |
Mortgage Revenue Bonds Held In Trust [Member] | Jackson Manor Apartments [member] | MS [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 6,900,000 | [9] | 6,900,000 | [10] |
Estimated Fair Value |  | 6,900,000 | [9] | 6,900,000 | [10] |
Mortgage Revenue Bonds Held In Trust [Member] | Greens Property [Member] | Series A [Member] | NC [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances | [6] |  |  | 7,599,000 |  |
Cumulative Unrealized Gain | [6] |  |  | 597 |  |
Estimated Fair Value | [6] |  |  | 7,599,597 |  |
Mortgage Revenue Bonds Held In Trust [Member] | Lynnhaven Apartments [Member] | CA [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances | [15] |  |  | 10,352,000 |  |
Cumulative Unrealized Gain | [15] |  |  | 127,107 |  |
Estimated Fair Value | [15] |  |  | 10,479,107 |  |
Mortgage Revenue Bonds Held In Trust [Member] | Silver Moon [Member] | Series A [Member] | NM [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 7,538,527 | [3] | 7,557,312 | [4] |
Cumulative Unrealized Gain |  | 1,047,812 | [3] | 863,401 | [4] |
Estimated Fair Value |  | 8,586,339 | [3] | 8,420,713 | [4] |
Mortgage Revenue Bonds Held In Trust [Member] | Village at Avalon [Member] | NM [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 15,909,691 | [16] | 15,942,560 | [17] |
Cumulative Unrealized Gain |  | 2,173,819 | [16] | 1,727,010 | [17] |
Estimated Fair Value |  | 18,083,510 | [16] | 17,669,570 | [17] |
Mortgage Revenue Bonds Held In Trust [Member] | Columbia Gardens [Member] | Goose Creek, SC [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 12,495,686 | [1] | 12,542,207 | [2] |
Cumulative Unrealized Gain |  | 1,034,559 | [1] | 968,469 | [2] |
Estimated Fair Value |  | 13,530,245 | [1] | 13,510,676 | [2] |
Mortgage Revenue Bonds Held In Trust [Member] | Companion at Thornhill Apartments [Member] | Goose Creek, SC [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 10,750,304 | [1] | 10,786,181 | [2] |
Cumulative Unrealized Gain |  | 786,529 | [1] | 709,979 | [2] |
Estimated Fair Value |  | 11,536,833 | [1] | 11,496,160 | [2] |
Mortgage Revenue Bonds Held In Trust [Member] | The Ivy Apartments [Member] | Goose Creek, SC [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances | [9] | 30,574,501 |  |  |  |
Cumulative Unrealized Gain | [9] | 2,497,005 |  |  |  |
Estimated Fair Value | [9] | 33,071,506 |  |  |  |
Mortgage Revenue Bonds Held In Trust [Member] | The Palms at Premier Park Apartment [Member] | Goose Creek, SC [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 18,072,451 | [5] | 18,137,042 | [6] |
Cumulative Unrealized Gain |  | 781,887 | [5] | 808,555 | [6] |
Estimated Fair Value |  | 18,854,338 | [5] | 18,945,597 | [6] |
Mortgage Revenue Bonds Held In Trust [Member] | The Park at Sondrio [Member] | Series 2022A [Member] | Goose Creek, SC [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 38,100,000 | [9] | 38,100,000 | [10] |
Cumulative Unrealized Gain | [9] | 3,419,850 |  |  |  |
Estimated Fair Value |  | 41,519,850 | [9] | 38,100,000 | [10] |
Mortgage Revenue Bonds Held In Trust [Member] | The Park at Vietti [Member] | Series 2022A [Member] | Goose Creek, SC [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 26,985,000 | [9] | 26,985,000 | [10] |
Cumulative Unrealized Gain | [9] | 2,585,218 |  |  |  |
Estimated Fair Value |  | 29,570,218 | [9] | 26,985,000 | [10] |
Mortgage Revenue Bonds Held In Trust [Member] | Village at River's Edge [Member] | Goose Creek, SC [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 9,629,238 | [1] | 9,649,659 | [2] |
Cumulative Unrealized Gain |  | 619,396 | [1] | 590,962 | [2] |
Estimated Fair Value |  | 10,248,634 | [1] | 10,240,621 | [2] |
Mortgage Revenue Bonds Held In Trust [Member] | Willow Run [Member] | Goose Creek, SC [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 12,322,456 | [1] | 12,368,964 | [2] |
Cumulative Unrealized Gain |  | 1,019,204 | [1] | 953,988 | [2] |
Estimated Fair Value |  | 13,341,660 | [1] | 13,322,952 | [2] |
Mortgage Revenue Bonds Held In Trust [Member] | Wiindsor Shores Apartments [Member] | Series A [Member] | Goose Creek, SC [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances | [9] | 21,545,000 |  |  |  |
Cumulative Unrealized Gain | [9] | 1,947,217 |  |  |  |
Estimated Fair Value | [9] | 23,492,217 |  |  |  |
Mortgage Revenue Bonds Held In Trust [Member] | Arbors at Hickory Ridge [Member] | TN [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 10,549,160 | [5] | 10,591,726 | [6] |
Cumulative Unrealized Gain |  | 2,100,532 | [5] | 2,005,029 | [6] |
Estimated Fair Value |  | 12,649,692 | [5] | 12,596,755 | [6] |
Mortgage Revenue Bonds Held In Trust [Member] | Avistar at Copperfield [Member] | Series A [Member] | TX [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 13,494,899 | [9] | 13,532,636 | [10] |
Cumulative Unrealized Gain |  | 1,183,942 | [9] | 919,463 | [10] |
Estimated Fair Value |  | 14,678,841 | [9] | 14,452,099 | [10] |
Mortgage Revenue Bonds Held In Trust [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 |  | 8,863,735 | [5] | 8,896,378 | [6] |
Cumulative Unrealized Gain |  | 1,120,331 | [5] | 975,504 | [6] |
Estimated Fair Value |  | 9,984,066 | [5] | 9,871,882 | [6] |
Mortgage Revenue Bonds Held In Trust [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 |  | 7,171,072 | [5] | 7,196,674 | [6] |
Cumulative Unrealized Gain |  | 846,035 | [5] | 717,701 | [6] |
Estimated Fair Value |  | 8,017,107 | [5] | 7,914,375 | [6] |
Mortgage Revenue Bonds Held In Trust [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 |  | 12,390,934 | [3] | 12,429,842 | [4] |
Cumulative Unrealized Gain |  | 1,023,277 | [3] | 950,930 | [4] |
Estimated Fair Value |  | 13,414,211 | [3] | 13,380,772 | [4] |
Mortgage Revenue Bonds Held In Trust [Member] | Avistar at Wilcrest [Member] | Series A [Member] | TX [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 5,114,293 | [9] | 5,128,595 | [10] |
Cumulative Unrealized Gain |  | 326,464 | [9] | 170,370 | [10] |
Estimated Fair Value |  | 5,440,757 | [9] | 5,298,965 | [10] |
Mortgage Revenue Bonds Held In Trust [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 |  | 38,832,712 | [9] | 38,941,304 | [10] |
Cumulative Unrealized Gain |  | 3,198,610 | [9] | 2,645,832 | [10] |
Estimated Fair Value |  | 42,031,322 | [9] | 41,587,136 | [10] |
Mortgage Revenue Bonds Held In Trust [Member] | Avistar in 09 [Member] | Series A [Member] | TX [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 6,191,941 | [5] | 6,214,048 | [6] |
Cumulative Unrealized Gain |  | 730,518 | [5] | 619,707 | [6] |
Estimated Fair Value |  | 6,922,459 | [5] | 6,833,755 | [6] |
Mortgage Revenue Bonds Held In Trust [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 |  | 15,100,333 | [5] | 15,155,942 | [6] |
Cumulative Unrealized Gain |  | 1,542,244 | [5] | 1,290,551 | [6] |
Estimated Fair Value |  | 16,642,577 | [5] | 16,446,493 | [6] |
Mortgage Revenue Bonds Held In Trust [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 |  | 4,909,476 | [5] | 4,927,003 | [6] |
Cumulative Unrealized Gain |  | 610,623 | [5] | 523,079 | [6] |
Estimated Fair Value |  | 5,520,099 | [5] | 5,450,082 | [6] |
Mortgage Revenue Bonds Held In Trust [Member] | Bruton Apartments [Member] | TX [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 17,342,117 | [1] | 17,381,296 | [2] |
Cumulative Unrealized Gain | [2] |  |  | 281,271 |  |
Estimated Fair Value |  | 17,342,117 | [1] | 17,662,567 | [2] |
Mortgage Revenue Bonds Held In Trust [Member] | Concord at Gulfgate [Member] | Series A [Member] | TX [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 18,352,583 | [1] | 18,404,942 | [2] |
Cumulative Unrealized Gain |  | 2,049,948 | [1] | 1,842,303 | [2] |
Estimated Fair Value |  | 20,402,531 | [1] | 20,247,245 | [2] |
Mortgage Revenue Bonds Held In Trust [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 |  | 12,856,852 | [1] | 12,893,533 | [2] |
Cumulative Unrealized Gain |  | 1,476,614 | [1] | 1,249,523 | [2] |
Estimated Fair Value |  | 14,333,466 | [1] | 14,143,056 | [2] |
Mortgage Revenue Bonds Held In Trust [Member] | Concord at Williamcrest [Member] | Series A [Member] | TX [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 19,916,642 | [1] | 19,973,464 | [2] |
Cumulative Unrealized Gain |  | 2,287,433 | [1] | 1,935,645 | [2] |
Estimated Fair Value |  | 22,204,075 | [1] | 21,909,109 | [2] |
Mortgage Revenue Bonds Held In Trust [Member] | Crossing at 1415 [Member] | Series A [Member] | TX [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 7,149,233 | [1] | 7,170,756 | [2] |
Cumulative Unrealized Gain |  | 717,470 | [1] | 605,369 | [2] |
Estimated Fair Value |  | 7,866,703 | [1] | 7,776,125 | [2] |
Mortgage Revenue Bonds Held In Trust [Member] | Decatur-Angle [Member] | TX [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 21,812,768 | [1] | 21,866,672 | [2] |
Cumulative Unrealized Gain | [2] |  |  | 77,837 |  |
Estimated Fair Value |  | 21,812,768 | [1] | 21,944,509 | [2] |
Mortgage Revenue Bonds Held In Trust [Member] | Esperanza at Palo Alto [Member] | TX [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 18,875,771 | [1] | 18,916,082 | [2] |
Cumulative Unrealized Gain |  | 2,614,493 | [1] | 2,209,462 | [2] |
Estimated Fair Value |  | 21,490,264 | [1] | 21,125,544 | [2] |
Mortgage Revenue Bonds Held In Trust [Member] | Heights at 515 [Member] | Series A [Member] | TX [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 6,545,246 | [1] | 6,564,951 | [2] |
Cumulative Unrealized Gain |  | 714,161 | [1] | 573,569 | [2] |
Estimated Fair Value |  | 7,259,407 | [1] | 7,138,520 | [2] |
Mortgage Revenue Bonds Held In Trust [Member] | Heritage Square [Member] | Series A [Member] | TX [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 10,291,273 | [3] | 10,325,196 | [4] |
Cumulative Unrealized Gain |  | 762,083 | [3] | 671,790 | [4] |
Estimated Fair Value |  | 11,053,356 | [3] | 10,996,986 | [4] |
Mortgage Revenue Bonds Held In Trust [Member] | Oaks at Georgetown [Member] | Series A [Member] | TX [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 11,881,878 | [1] | 11,911,472 | [2] |
Cumulative Unrealized Gain |  | 991,761 | [1] | 746,300 | [2] |
Estimated Fair Value |  | 12,873,639 | [1] | 12,657,772 | [2] |
Mortgage Revenue Bonds Held In Trust [Member] | Runnymede [Member] | TX [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 9,535,000 | [13] | 9,535,000 | [14] |
Cumulative Unrealized Gain | [14] |  |  | 45,577 |  |
Estimated Fair Value |  | 9,535,000 | [13] | 9,580,577 | [14] |
Mortgage Revenue Bonds Held In Trust [Member] | Southpark [Member] | TX [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 11,274,797 | [13] | 11,257,062 | [14] |
Cumulative Unrealized Gain |  | 1,271,619 | [13] | 1,352,726 | [14] |
Estimated Fair Value |  | 12,546,416 | [13] | 12,609,788 | [14] |
Mortgage Revenue Bonds Held In Trust [Member] | 15 West Apartments [Member] | WA [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 9,434,170 | [1] | 9,454,318 | [2] |
Cumulative Unrealized Gain |  | 1,751,049 | [1] | 1,534,060 | [2] |
Estimated Fair Value |  | 11,185,219 | [1] | 10,988,378 | [2] |
Mortgage Revenue Bonds [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 18,473,442 |  | 36,888,068 |  |
Cumulative Unrealized Gain |  | 1,605,344 |  | 504,076 |  |
Cumulative Unrealized Loss |  | (1,227,422) |  | (1,193,085) |  |
Estimated Fair Value |  | 18,851,364 |  | 36,199,059 |  |
Mortgage Revenue Bonds [Member] | CCBA Senior Garden Apartments [Member] | CA [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 3,783,991 |  | 3,792,700 |  |
Cumulative Unrealized Gain |  | 173,162 |  | 42,672 |  |
Estimated Fair Value |  | 3,957,153 |  | 3,835,372 |  |
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 |  |  |  | 14,118,500 |  |
Estimated Fair Value |  |  |  | 14,118,500 |  |
Mortgage Revenue Bonds [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 |  |
Estimated Fair Value |  |  |  | 4,000,000 |  |
Mortgage Revenue Bonds [Member] | Residency at Empire - Series BB-3 [Member] | CA [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 55,000 |  | 55,000 |  |
Cumulative Unrealized Gain |  | 815,481 |  |  |  |
Estimated Fair Value |  | 870,481 |  | 55,000 |  |
Mortgage Revenue Bonds [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 |  | 1,000,000 |  |  |  |
Estimated Fair Value |  | 1,000,000 |  |  |  |
Mortgage Revenue Bonds [Member] | Greens Property [Member] | Series B [Member] | NC [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  |  |  | 915,039 |  |
Cumulative Unrealized Gain |  |  |  | 122 |  |
Estimated Fair Value |  |  |  | 915,161 |  |
Mortgage Revenue Bonds [Member] | Provision Center 2014-1 [Member] | TN [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 930,270 |  | 4,294,939 |  |
Estimated Fair Value |  | 930,270 |  | 4,294,939 |  |
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 |  | 723,197 |  | 724,747 |  |
Cumulative Unrealized Gain |  | 64,509 |  | 53,132 |  |
Estimated Fair Value |  | 787,706 |  | 777,879 |  |
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 |  | 529,739 |  | 530,829 |  |
Cumulative Unrealized Gain |  | 42,391 |  | 33,406 |  |
Estimated Fair Value |  | 572,130 |  | 564,235 |  |
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 |  | 123,063 |  | 123,176 |  |
Cumulative Unrealized Gain |  | 23,296 |  | 22,510 |  |
Estimated Fair Value |  | 146,359 |  | 145,686 |  |
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 |  | 436,987 |  | 437,886 |  |
Cumulative Unrealized Gain |  | 34,969 |  | 27,557 |  |
Estimated Fair Value |  | 471,956 |  | 465,443 |  |
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 |  | 429,726 |  | 430,647 |  |
Cumulative Unrealized Gain |  | 33,619 |  |  |  | $ 26,816
Estimated Fair Value |  | 463,345 |  | 457,463 |  |
Mortgage Revenue Bonds [Member] | Solano Vista [Member] | Series A [Member] | CA [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 2,626,469 |  | 2,631,168 |  |
Cumulative Unrealized Gain |  | 417,917 |  | 297,861 |  |
Estimated Fair Value |  | 3,044,386 |  | 2,929,029 |  |
Mortgage Revenue Bonds [Member] | Meadow Valley [Member] | MI [Member] |  |  |  |  |  |
Schedule Of Available For Sale Securities [Line Items] |  |  |  |  |  |
Cost Adjusted for Paydowns and Allowances |  | 7,835,000 | [18] | 4,833,437 |  |
Cumulative Unrealized Loss |  | (1,227,422) | [18] | (1,193,085) |  |
Estimated Fair Value |  | $ (6,607,578) | [18] | $ 3,640,352 |  |
[1] | MRB owned by ATAX TEBS IV, LLC (M45 TEBS), Note 16. The TEBS financing has contractual limitations on the Partnership’s ability to sell the MRB.
[2] | MRB owned by ATAX TEBS IV, LLC (M45 TEBS), Note 16. The TEBS financing has contractual limitations on the Partnership’s ability to sell the MRB.
[3] | MRB owned by ATAX TEBS III, LLC (M33 TEBS), Note 16. The TEBS financing has contractual limitations on the Partnership’s ability to sell the MRB.
[4] | MRB owned by ATAX TEBS III, LLC (M33 TEBS), Note 16. The TEBS financing has contractual limitations on the Partnership’s ability to sell the MRB.
[5] | MRB owned by ATAX TEBS II, LLC (M31 TEBS), Note 16. The TEBS financing has contractual limitations on the Partnership’s ability to sell the MRB.
[6] | MRB owned by ATAX TEBS II, LLC (M31 TEBS), Note 16. The TEBS financing has contractual limitations on the Partnership’s ability to sell the MRB.
[7] | 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 March 31, 2023, the MRB has been in an unrealized loss position for less than 12 months.
[8] | MRB held by Barclays Capital Inc. in a debt financing transaction, Note 16.
[9] | MRB held by Mizuho Capital Markets, LLC in a debt financing transaction, Note 16.
[10] | MRB held by Mizuho Capital Markets, LLC in a debt financing transaction, Note 16.
[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 March 31, 2023, the MRB has been in an unrealized loss position for more than 12 months.
[12] | 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.
[13] | MRB owned by ATAX TEBS I, LLC (M24 TEBS), Note 16. The TEBS financing has contractual limitations on the Partnership’s ability to sell the MRB.
[14] | MRB owned by ATAX TEBS I, LLC (M24 TEBS), Note 16. The TEBS financing has contractual limitations on the Partnership’s ability to sell the MRB.
[15] | MRB held by Barclays Capital Inc. in a debt financing transaction, Note 16.
[16] | MRB held by Morgan Stanley in a debt financing transaction, Note 16.
[17] | MRB held by Morgan Stanley in a debt financing transaction, Note 16.
[18] | The Partnership has a remaining MRB funding commitment of $36.3 million as of March 31, 2023. 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 $36.3 million funding commitment outstanding as of March 31, 2023 (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 March 31, 2023, the MRB has been in an unrealized loss position for more than 12 months.

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