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Mortgage Revenue Bonds - Schedule of Investments in MRBs (Details) - USD ($)
Jun. 30, 2023
Dec. 31, 2022
Mortgage Revenue Bonds Held In Trust [Member]    
Schedule Of Available For Sale Securities [Line Items]    
Cost Adjusted for Paydowns and Allowances $ 833,688,820 $ 718,413,130
Cumulative Unrealized Gain 53,662,170 45,127,126
Cumulative Unrealized Loss (1,673,698) (331,311)
Estimated Fair Value 885,677,292 763,208,945
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 9,824,982 [1] 9,874,603 [2]
Cumulative Unrealized Gain 875,798 [1] 888,242 [2]
Estimated Fair Value 10,700,780 [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 4,342,630 [3] 4,372,370 [4]
Cumulative Unrealized Gain 263,018 [3] 309,570 [4]
Estimated Fair Value 4,605,648 [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 3,582,325 [1] 3,600,418 [2]
Cumulative Unrealized Gain 249,635 [1] 274,456 [2]
Estimated Fair Value 3,831,960 [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 6,632,457 [1] 6,665,787 [2]
Cumulative Unrealized Gain 617,297 [1] 625,752 [2]
Estimated Fair Value 7,249,754 [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 6,403,184 [5] 6,449,455 [6]
Cumulative Unrealized Gain 485,216 [5] 581,466 [6]
Estimated Fair Value 6,888,400 [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 1,625,106 [1] 1,633,397 [2]
Cumulative Unrealized Gain 138,540 [1] 140,681 [2]
Estimated Fair Value 1,763,646 [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] (78,748)  
Estimated Fair Value [7],[8] 10,273,252  
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 2,352,645 [3] 2,368,757 [4]
Cumulative Unrealized Gain 161,511 [3] 199,617 [4]
Estimated Fair Value 2,514,156 [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 7,475,217 [9] 7,507,111 [10]
Cumulative Unrealized Gain 835,516 [9] 834,292 [10]
Estimated Fair Value 8,310,733 [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 6,632,442 [9] 6,656,219 [10]
Cumulative Unrealized Gain 930,803 [9] 902,690 [10]
Estimated Fair Value 7,563,245 [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 (218,036) [9],[11] (331,311) [10],[12]
Estimated Fair Value 10,871,964 [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] 1,068,055  
Estimated Fair Value [9] 15,186,555  
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] 339,016  
Estimated Fair Value [9] 4,339,016  
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 9,087,730 [9] 9,088,496 [10]
Cumulative Unrealized Gain 177,923 [9] 122,815 [10]
Estimated Fair Value 9,265,653 [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 221,377 [9] 176,092 [10]
Estimated Fair Value 7,721,377 [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 702,898 [9] 726,834 [10]
Estimated Fair Value 5,602,898 [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 29,564,333 [9] 26,067,585 [10]
Estimated Fair Value 29,564,333 [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 3,350,883 [1] 3,367,978 [2]
Cumulative Unrealized Gain 253,336 [1] 255,787 [2]
Estimated Fair Value 3,604,219 [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 2,850,142 [3] 2,869,660 [4]
Cumulative Unrealized Gain 184,119 [3] 216,000 [4]
Estimated Fair Value 3,034,261 [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 4,110,744 [1] 4,137,438 [2]
Cumulative Unrealized Gain 476,314 [1] 522,910 [2]
Estimated Fair Value 4,587,058 [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 7,065,009 [1] 7,100,512 [2]
Cumulative Unrealized Gain 657,555 [1] 666,562 [2]
Estimated Fair Value 7,722,564 [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 11,895,167 [1] 11,954,944 [2]
Cumulative Unrealized Gain 1,028,404 [1] 1,038,904 [2]
Estimated Fair Value 12,923,571 [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 6,168,706 [1] 6,199,861 [2]
Cumulative Unrealized Gain 159,350 [1] 265,296 [2]
Estimated Fair Value 6,328,056 [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 3,405,258 [1] 3,428,986 [2]
Cumulative Unrealized Gain 211,317 [1] 124,598 [2]
Estimated Fair Value 3,616,575 [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 2,962,861 [1] 2,977,825 [2]
Cumulative Unrealized Gain 215,991 [1] 247,354 [2]
Estimated Fair Value 3,178,852 [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 5,575,268 [5] 5,616,043 [6]
Cumulative Unrealized Gain 171,026 [5] 264,300 [6]
Estimated Fair Value 5,746,294 [5] 5,880,343 [6]
Mortgage Revenue Bonds Held In Trust [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 [9] 10,400,000  
Cumulative Unrealized Gain [9] 1,178,369  
Estimated Fair Value [9] 11,578,369  
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 3,891,760 [9] 3,908,104 [10]
Cumulative Unrealized Gain 487,062 [9] 514,719 [10]
Estimated Fair Value 4,378,822 [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 3,643,429 [5] 3,670,075 [6]
Cumulative Unrealized Gain 220,158 [5] 267,369 [6]
Estimated Fair Value 3,863,587 [5] 3,937,444 [6]
Mortgage Revenue Bonds Held In Trust [Member] | Maryalice Circle Apartments [Member] | GA [Member]    
Schedule Of Available For Sale Securities [Line Items]    
Cost Adjusted for Paydowns and Allowances [9] 5,900,000  
Cumulative Unrealized Gain [9] 835,136  
Estimated Fair Value [9] 6,735,136  
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 7,258,852 [13] 7,286,052 [14]
Cumulative Unrealized Gain 1,156,144 [13] 1,286,871 [14]
Estimated Fair Value 8,414,996 [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 49,792 [5] 117,014 [6]
Estimated Fair Value 4,889,792 [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 10,508,550 [3] 10,585,375 [4]
Cumulative Unrealized Gain 866,569 [3] 645,412 [4]
Estimated Fair Value 11,375,119 [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 58,220,143 [9] 58,107,262 [10]
Cumulative Unrealized Gain 2,346,545 [9] 2,217,857 [10]
Estimated Fair Value 60,566,688 [9] 60,325,119 [10]
Mortgage Revenue Bonds Held In Trust [Member] | Meadow Valley [Member] | Series 2022A [Member] | MI [Member]    
Schedule Of Available For Sale Securities [Line Items]    
Cost Adjusted for Paydowns and Allowances [15] 11,584,949  
Cumulative Unrealized Loss [15] (1,145,911)  
Estimated Fair Value [15] 10,439,038  
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] | Village Point [Member] | NJ [Member]    
Schedule Of Available For Sale Securities [Line Items]    
Cost Adjusted for Paydowns and Allowances [7],[8] 23,000,000  
Cumulative Unrealized Loss [7],[8] (231,003)  
Estimated Fair Value [7],[8] 22,768,997  
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 [16]   10,352,000
Cumulative Unrealized Gain [16]   127,107
Estimated Fair Value [16]   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 7,519,458 [3] 7,557,312 [4]
Cumulative Unrealized Gain 878,706 [3] 863,401 [4]
Estimated Fair Value 8,398,164 [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 15,876,344 [17] 15,942,560 [18]
Cumulative Unrealized Gain 1,795,636 [17] 1,727,010 [18]
Estimated Fair Value 17,671,980 [17] 17,669,570 [18]
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 12,448,181 [1] 12,542,207 [2]
Cumulative Unrealized Gain 775,453 [1] 968,469 [2]
Estimated Fair Value 13,223,634 [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 10,713,904 [1] 10,786,181 [2]
Cumulative Unrealized Gain 615,842 [1] 709,979 [2]
Estimated Fair Value 11,329,746 [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] 30,572,314  
Cumulative Unrealized Gain [9] 1,865,581  
Estimated Fair Value [9] 32,437,895  
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 18,006,845 [5] 18,137,042 [6]
Cumulative Unrealized Gain 524,770 [5] 808,555 [6]
Estimated Fair Value 18,531,615 [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] 2,610,201  
Estimated Fair Value 40,710,201 [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] 2,003,286  
Estimated Fair Value 28,988,286 [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 9,608,510 [1] 9,649,659 [2]
Cumulative Unrealized Gain 615,950 [1] 590,962 [2]
Estimated Fair Value 10,224,460 [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 12,274,963 [1] 12,368,964 [2]
Cumulative Unrealized Gain 763,763 [1] 953,988 [2]
Estimated Fair Value 13,038,726 [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] 1,492,942  
Estimated Fair Value [9] 23,037,942  
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 10,505,964 [5] 10,591,726 [6]
Cumulative Unrealized Gain 1,794,215 [5] 2,005,029 [6]
Estimated Fair Value 12,300,179 [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 13,456,617 [9] 13,532,636 [10]
Cumulative Unrealized Gain 883,081 [9] 919,463 [10]
Estimated Fair Value 14,339,698 [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 8,830,600 [5] 8,896,378 [6]
Cumulative Unrealized Gain 921,875 [5] 975,504 [6]
Estimated Fair Value 9,752,475 [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 7,145,084 [5] 7,196,674 [6]
Cumulative Unrealized Gain 608,686 [5] 717,701 [6]
Estimated Fair Value 7,753,770 [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 12,351,439 [3] 12,429,842 [4]
Cumulative Unrealized Gain 766,179 [3] 950,930 [4]
Estimated Fair Value 13,117,618 [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 5,099,785 [9] 5,128,595 [10]
Cumulative Unrealized Gain 144,580 [9] 170,370 [10]
Estimated Fair Value 5,244,365 [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 38,722,553 [9] 38,941,304 [10]
Cumulative Unrealized Gain 2,345,278 [9] 2,645,832 [10]
Estimated Fair Value 41,067,831 [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 6,169,501 [5] 6,214,048 [6]
Cumulative Unrealized Gain 599,971 [5] 619,707 [6]
Estimated Fair Value 6,769,472 [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 15,043,885 [5] 15,155,942 [6]
Cumulative Unrealized Gain 1,396,203 [5] 1,290,551 [6]
Estimated Fair Value 16,440,088 [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 4,891,684 [5] 4,927,003 [6]
Cumulative Unrealized Gain 505,488 [5] 523,079 [6]
Estimated Fair Value 5,397,172 [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 17,302,338 [1] 17,381,296 [2]
Cumulative Unrealized Gain [2]   281,271
Estimated Fair Value 17,302,338 [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 18,299,434 [1] 18,404,942 [2]
Cumulative Unrealized Gain 1,664,850 [1] 1,842,303 [2]
Estimated Fair Value 19,964,284 [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 12,819,619 [1] 12,893,533 [2]
Cumulative Unrealized Gain 1,204,733 [1] 1,249,523 [2]
Estimated Fair Value 14,024,352 [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 19,858,964 [1] 19,973,464 [2]
Cumulative Unrealized Gain 1,866,260 [1] 1,935,645 [2]
Estimated Fair Value 21,725,224 [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 7,127,386 [1] 7,170,756 [2]
Cumulative Unrealized Gain 560,951 [1] 605,369 [2]
Estimated Fair Value 7,688,337 [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 21,758,071 [1] 21,866,672 [2]
Cumulative Unrealized Gain [2]   77,837
Estimated Fair Value 21,758,071 [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 18,834,872 [1] 18,916,082 [2]
Cumulative Unrealized Gain 2,142,732 [1] 2,209,462 [2]
Estimated Fair Value 20,977,604 [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 6,525,244 [1] 6,564,951 [2]
Cumulative Unrealized Gain 567,659 [1] 573,569 [2]
Estimated Fair Value 7,092,903 [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 10,256,839 [3] 10,325,196 [4]
Cumulative Unrealized Gain 559,509 [3] 671,790 [4]
Estimated Fair Value 10,816,348 [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 11,851,912 [1] 11,911,472 [2]
Cumulative Unrealized Gain 751,697 [1] 746,300 [2]
Estimated Fair Value 12,603,609 [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 9,465,000 [13] 9,535,000 [14]
Cumulative Unrealized Gain 40,656 [13] 45,577 [14]
Estimated Fair Value 9,505,656 [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 11,292,532 [13] 11,257,062 [14]
Cumulative Unrealized Gain 1,307,327 [13] 1,352,726 [14]
Estimated Fair Value 12,599,859 [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 9,413,706 [1] 9,454,318 [2]
Cumulative Unrealized Gain 1,524,320 [1] 1,534,060 [2]
Estimated Fair Value 10,938,026 [1] 10,988,378 [2]
Mortgage Revenue Bonds [Member]    
Schedule Of Available For Sale Securities [Line Items]    
Cost Adjusted for Paydowns and Allowances 18,733,783 36,888,068
Cumulative Unrealized Gain 1,552,904 504,076
Cumulative Unrealized Loss   (1,193,085)
Estimated Fair Value 20,286,687 36,199,059
Mortgage Revenue Bonds [Member] | 40rty on Colony - Series P [Member] | CA [Member]    
Schedule Of Available For Sale Securities [Line Items]    
Cost Adjusted for Paydowns and Allowances 5,964,861  
Estimated Fair Value 5,964,861  
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 3,775,183 3,792,700
Cumulative Unrealized Gain 138,369 42,672
Estimated Fair Value 3,913,552 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 620,102  
Estimated Fair Value 675,102 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] | Solano Vista [Member] | Series A [Member] | CA [Member]    
Schedule Of Available For Sale Securities [Line Items]    
Cost Adjusted for Paydowns and Allowances 2,621,702 2,631,168
Cumulative Unrealized Gain 351,700 297,861
Estimated Fair Value 2,973,402 2,929,029
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  
Cumulative Unrealized Gain 283,203  
Estimated Fair Value 2,433,203  
Mortgage Revenue Bonds [Member] | Meadow Valley [Member] | MI [Member]    
Schedule Of Available For Sale Securities [Line Items]    
Cost Adjusted for Paydowns and Allowances [19]   4,833,437
Cumulative Unrealized Loss [19]   (1,193,085)
Estimated Fair Value [19]   3,640,352
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 929,005 4,294,939
Estimated Fair Value 929,005 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 721,611 724,747
Cumulative Unrealized Gain 50,865 53,132
Estimated Fair Value 772,476 777,879
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 528,624 530,829
Cumulative Unrealized Gain 33,042 33,406
Estimated Fair Value 561,666 564,235
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 122,946 123,176
Cumulative Unrealized Gain 20,243 22,510
Estimated Fair Value 143,189 145,686
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 436,067 437,886
Cumulative Unrealized Gain 29,637 27,557
Estimated Fair Value 465,704 465,443
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 428,784 430,647
Cumulative Unrealized Gain 25,743 26,816
Estimated Fair Value $ 454,527 $ 457,463
[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 June 30, 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 June 30, 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] The Partnership has a remaining MRB funding commitment of $32.5 million as of June 30, 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 $32.5 million funding commitment outstanding as of June 30, 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 June 30, 2023, the MRB has been in an unrealized loss position for more than 12 months.
[16] MRB held by Barclays Capital Inc. in a debt financing transaction, Note 16.
[17] MRB held by Morgan Stanley in a debt financing transaction, Note 16.
[18] MRB held by Morgan Stanley in a debt financing transaction, Note 16.
[19] The Partnership has a remaining MRB funding commitment of $39.3 million as of December 31, 2022. 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 $39.3 million funding commitment outstanding as of December 31, 2022 (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.