Mortgage Revenue Bonds - Schedule of Investments in MRBs (Details) - USD ($)		Sep. 30, 2024		Dec. 31, 2023
Mortgage Revenue Bonds Held In Trust [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		$ 971,383,297		$ 825,040,234
Cumulative Unrealized Gain		56,228,213		58,971,739
Cumulative Unrealized Loss		(1,247,513)		(981,187)
Estimated Fair Value		1,026,363,997		883,030,786
Mortgage Revenue Bonds Held In Trust [Member] | The Safford [Member] | Series A [Member] | AZ [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		26,322,560	[1]	7,667,299	[2]
Cumulative Unrealized Gain		2,161,492	[1]	2,717,033	[2]
Estimated Fair Value		28,484,052	[1]	10,384,332	[2]
Mortgage Revenue Bonds Held In Trust [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		5,962,679	[1]	5,964,008	[2]
Cumulative Unrealized Gain		634,867	[1]	739,204	[2]
Estimated Fair Value		6,597,546	[1]	6,703,212	[2]
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		9,695,374	[3]	9,774,107	[4]
Cumulative Unrealized Gain		696,324	[3]	845,146	[4]
Estimated Fair Value		10,391,698	[3]	10,619,253	[4]
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		4,264,440	[5]	4,312,025	[6]
Cumulative Unrealized Gain		234,094	[5]	298,507	[6]
Estimated Fair Value		4,498,534	[5]	4,610,532	[6]
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		3,535,068	[3]	3,563,775	[4]
Cumulative Unrealized Gain		224,714	[3]	275,305	[4]
Estimated Fair Value		3,759,782	[3]	3,839,080	[4]
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		6,545,401	[3]	6,598,285	[4]
Cumulative Unrealized Gain		472,114	[3]	573,928	[4]
Estimated Fair Value		7,017,515	[3]	7,172,213	[4]
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		6,281,531	[7]	6,355,567	[8]
Cumulative Unrealized Gain		363,312	[7]	441,345	[8]
Estimated Fair Value		6,644,843	[7]	6,796,912	[8]
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		1,603,453	[3]	1,616,607	[4]
Cumulative Unrealized Gain		105,861	[3]	128,930	[4]
Estimated Fair Value		1,709,314	[3]	1,745,537	[4]
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	[9]	10,352,000
Cumulative Unrealized Gain	[9]	10,681
Estimated Fair Value	[9]	10,362,681
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		2,310,286	[5]	2,336,065	[4]
Cumulative Unrealized Gain		144,151	[5]	170,291	[4]
Estimated Fair Value		2,454,437	[5]	2,506,356	[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		7,391,545	[1]	7,442,435	[2]
Cumulative Unrealized Gain		632,062	[1]	846,333	[2]
Estimated Fair Value		8,023,607	[1]	8,288,768	[2]
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		6,569,928	[1]	6,607,973	[2]
Cumulative Unrealized Gain		824,757	[1]	992,675	[2]
Estimated Fair Value		7,394,685	[1]	7,600,648	[2]
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	[1],[10]	3,463,976
Cumulative Unrealized Loss	[1],[10]	(89,986)
Estimated Fair Value	[1],[10]	3,373,990
Mortgage Revenue Bonds Held In Trust [Member] | Ocotillo Springs [Member] | Series A-1 [Member] | CA [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances	[1]	497,059
Cumulative Unrealized Gain	[1]	88,592
Estimated Fair Value	[1]	585,651
Mortgage Revenue Bonds Held In Trust [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	[1]	3,729,631
Cumulative Unrealized Gain	[1]	90,625
Estimated Fair Value	[1]	3,820,256
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		14,112,329	[1]	14,117,540	[2]
Cumulative Unrealized Gain		853,947	[1]	1,004,021	[2]
Estimated Fair Value		14,966,276	[1]	15,121,561	[2]
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		4,000,000	[1]	4,000,000	[2]
Cumulative Unrealized Gain		276,079	[1]	320,446	[2]
Estimated Fair Value		4,276,079	[1]	4,320,446	[2]
Mortgage Revenue Bonds Held In Trust [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]	5,055,000	[2]
Cumulative Unrealized Gain		774,775	[1]	575,709	[2]
Estimated Fair Value		14,774,775	[1]	5,630,709	[2]
Mortgage Revenue Bonds Held In Trust [Member] | Residency at Empire - Series BB-4 [Member] | CA [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances	[1]	13,800,000
Cumulative Unrealized Gain	[1]	283,747
Estimated Fair Value	[1]	14,083,747
Mortgage Revenue Bonds Held In Trust [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		9,080,296	[1]	9,085,429	[2]
Cumulative Unrealized Gain		163,976	[1]	181,504	[2]
Estimated Fair Value		9,244,272	[1]	9,266,933	[2]
Mortgage Revenue Bonds Held In Trust [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]	7,500,000	[2]
Cumulative Unrealized Gain		203,560	[1]	222,445	[2]
Estimated Fair Value		7,703,560	[1]	7,722,445	[2]
Mortgage Revenue Bonds Held In Trust [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]	12,300,000	[2]
Cumulative Unrealized Gain		774,752	[1]	697,895	[2]
Estimated Fair Value		26,854,752	[1]	12,997,895	[2]
Mortgage Revenue Bonds Held In Trust [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	[1]	14,020,000
Estimated Fair Value	[1]	14,020,000
Mortgage Revenue Bonds Held In Trust [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]	1,000,000
Estimated Fair Value	[1]	1,000,000
Mortgage Revenue Bonds Held In Trust [Member] | Solano Vista [Member] | Series A [Member] | CA [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances	[1]	2,596,792
Cumulative Unrealized Gain	[1]	271,321
Estimated Fair Value	[1]	2,868,113
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		29,557,380	[1]	29,560,945	[2]
Estimated Fair Value		29,557,380	[1]	29,560,945	[2]
Mortgage Revenue Bonds Held In Trust [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	[1]	11,500,000
Estimated Fair Value	[1]	11,500,000
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		3,306,234	[3]	3,333,357	[4]
Cumulative Unrealized Gain		227,267	[3]	265,848	[4]
Estimated Fair Value		3,533,501	[3]	3,599,205	[4]
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		2,798,824	[5]	2,830,055	[6]
Cumulative Unrealized Gain		183,076	[5]	206,301	[6]
Estimated Fair Value		2,981,900	[5]	3,036,356	[6]
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		4,040,562	[3]	4,083,273	[4]
Cumulative Unrealized Gain		381,459	[3]	443,901	[4]
Estimated Fair Value		4,422,021	[3]	4,527,174	[4]
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		6,972,275	[3]	7,028,608	[4]
Cumulative Unrealized Gain		502,904	[3]	611,358	[4]
Estimated Fair Value		7,475,179	[3]	7,639,966	[4]
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		11,739,034	[3]	11,833,880	[4]
Cumulative Unrealized Gain		846,727	[3]	992,473	[4]
Estimated Fair Value		12,585,761	[3]	12,826,353	[4]
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		6,087,330	[3]	6,136,763	[4]
Cumulative Unrealized Gain		206,461	[3]	381,019	[4]
Estimated Fair Value		6,293,791	[3]	6,517,782	[4]
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		3,343,148	[3]	3,380,901	[4]
Cumulative Unrealized Gain	[4]			226,216
Estimated Fair Value		3,343,148	[3]	3,607,117	[4]
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		2,923,776	[3]	2,947,519	[4]
Cumulative Unrealized Gain		193,876	[3]	227,699	[4]
Estimated Fair Value		3,117,652	[3]	3,175,218	[4]
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		5,468,065	[7]	5,533,307	[8]
Cumulative Unrealized Gain		31,246	[7]	119,693	[8]
Estimated Fair Value		5,499,311	[7]	5,653,000	[8]
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		10,400,000	[1]	10,400,000	[2]
Cumulative Unrealized Gain		915,573	[1]	1,073,808	[2]
Estimated Fair Value		11,315,573	[1]	11,473,808	[2]
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		3,848,885	[1]	3,874,962	[2]
Cumulative Unrealized Gain		392,319	[1]	461,663	[2]
Estimated Fair Value		4,241,204	[1]	4,336,625	[2]
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		3,573,372	[7]	3,616,007	[8]
Cumulative Unrealized Gain		195,799	[7]	223,459	[8]
Estimated Fair Value		3,769,171	[7]	3,839,466	[8]
Mortgage Revenue Bonds Held In Trust [Member] | Handsel Morgan Village Apartments [Member] | GA [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances	[1]	2,150,000
Cumulative Unrealized Gain	[1]	248,980
Estimated Fair Value	[1]	2,398,980
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		5,900,000	[1]	5,900,000	[2]
Cumulative Unrealized Gain		736,170	[1]	880,643	[2]
Estimated Fair Value		6,636,170	[1]	6,780,643	[2]
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		4,780,000	[7]	4,780,000	[8],[11]
Cumulative Unrealized Loss	[8],[11]			(5)
Estimated Fair Value		4,780,000	[7]	4,779,995	[8],[11]
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		10,306,124	[5]	10,429,392	[6]
Cumulative Unrealized Gain		446,760	[5]	1,221,077	[6]
Estimated Fair Value		10,752,884	[5]	11,650,469	[6]
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		58,504,219	[1]	58,333,646	[2]
Cumulative Unrealized Gain		4,312,250	[1]	3,275,636	[2]
Estimated Fair Value		62,816,469	[1]	61,609,282	[2]
Mortgage Revenue Bonds Held In Trust [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	[1]	31,150,000
Cumulative Unrealized Gain	[1]	3,985,399
Estimated Fair Value	[1]	35,135,399
Mortgage Revenue Bonds Held In Trust [Member] | Meadow Valley [Member] | MI [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances	[2],[12]			20,863,114
Cumulative Unrealized Loss	[2],[12]			(920,148)
Estimated Fair Value	[2],[12]			19,942,966
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	[1],[13]	36,770,768
Cumulative Unrealized Loss	[1],[13]	(936,992)
Estimated Fair Value	[1],[13]	35,833,776
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		4,792,150	[1],[14]	4,824,474	[2]
Cumulative Unrealized Gain	[2]			209,082
Cumulative Unrealized Loss	[1],[14]	(220,535)
Estimated Fair Value		4,571,615	[1],[14]	5,033,556	[2]
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	[9]	23,000,000
Cumulative Unrealized Gain	[9]	81,983
Estimated Fair Value	[9]	23,081,983
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	[11],[15]			10,352,000
Cumulative Unrealized Loss	[11],[15]			(30,994)
Estimated Fair Value	[11],[15]			10,321,006
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		7,419,717	[5]	7,480,455	[6]
Cumulative Unrealized Gain		791,735	[5]	928,841	[6]
Estimated Fair Value		8,211,452	[5]	8,409,296	[6]
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		15,702,174	[16]	15,808,184	[17]
Cumulative Unrealized Gain		1,680,596	[16]	1,962,627	[17]
Estimated Fair Value		17,382,770	[16]	17,770,811	[17]
Mortgage Revenue Bonds Held In Trust [Member] | Columbia Gardens [Member] | SC [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		12,201,896	[3]	12,351,218	[4]
Cumulative Unrealized Gain		723,229	[3]	807,633	[4]
Estimated Fair Value		12,925,125	[3]	13,158,851	[4]
Mortgage Revenue Bonds Held In Trust [Member] | Companion at Thornhill Apartments [Member] | SC [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		10,523,796	[3]	10,639,506	[4]
Cumulative Unrealized Gain		496,255	[3]	598,197	[4]
Estimated Fair Value		11,020,051	[3]	11,237,703	[4]
Mortgage Revenue Bonds Held In Trust [Member] | The Ivy Apartments [Member] | SC [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		30,560,832	[1]	30,567,832	[2]
Cumulative Unrealized Gain		1,620,042	[1]	1,933,208	[2]
Estimated Fair Value		32,180,874	[1]	32,501,040	[2]
Mortgage Revenue Bonds Held In Trust [Member] | The Palms at Premier Park Apartment [Member] | SC [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		17,663,033	[7]	17,872,527	[8]
Cumulative Unrealized Gain		136,730	[7]	427,099	[8]
Estimated Fair Value		17,799,763	[7]	18,299,626	[8]
Mortgage Revenue Bonds Held In Trust [Member] | The Park at Sondrio [Member] | Series 2022A [Member] | SC [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		38,100,000	[1]	38,100,000	[2]
Cumulative Unrealized Gain		2,266,828	[1]	2,682,964	[2]
Estimated Fair Value		40,366,828	[1]	40,782,964	[2]
Mortgage Revenue Bonds Held In Trust [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		26,985,000	[1]	26,985,000	[2]
Cumulative Unrealized Gain		1,669,536	[1]	1,972,695	[2]
Estimated Fair Value		28,654,536	[1]	28,957,695	[2]
Mortgage Revenue Bonds Held In Trust [Member] | Village at River's Edge [Member] | SC [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		9,500,083	[3]	9,566,110	[4]
Cumulative Unrealized Gain		1,117,743	[3]	1,000,545	[4]
Estimated Fair Value		10,617,826	[3]	10,566,655	[4]
Mortgage Revenue Bonds Held In Trust [Member] | Willow Run [Member] | SC [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		12,031,740	[3]	12,180,025	[4]
Cumulative Unrealized Gain		712,518	[3]	817,941	[4]
Estimated Fair Value		12,744,258	[3]	12,997,966	[4]
Mortgage Revenue Bonds Held In Trust [Member] | Wiindsor Shores Apartments [Member] | Series A [Member] | SC [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		21,545,000	[1]	21,545,000	[2]
Cumulative Unrealized Gain		1,290,595	[1]	1,530,085	[2]
Estimated Fair Value		22,835,595	[1]	23,075,085	[2]
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		10,280,197	[7]	10,417,646	[8]
Cumulative Unrealized Gain		1,524,823	[7]	1,805,985	[8]
Estimated Fair Value		11,805,020	[7]	12,223,631	[8]
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		13,256,750	[1]	13,378,386	[2]
Cumulative Unrealized Gain		821,812	[1]	983,586	[2]
Estimated Fair Value		14,078,562	[1]	14,361,972	[2]
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		8,657,283	[7]	8,762,826	[8]
Cumulative Unrealized Gain		750,764	[7]	909,437	[8]
Estimated Fair Value		9,408,047	[7]	9,672,263	[8]
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		7,009,150	[7]	7,091,928	[8]
Cumulative Unrealized Gain		560,305	[7]	666,990	[8]
Estimated Fair Value		7,569,455	[7]	7,758,918	[8]
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		12,144,850	[5]	12,270,653	[6]
Cumulative Unrealized Gain		605,382	[5]	830,179	[6]
Estimated Fair Value		12,750,232	[5]	13,100,832	[6]
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		5,024,040	[1]	5,070,137	[2]
Cumulative Unrealized Gain		290,852	[1]	313,010	[2]
Estimated Fair Value		5,314,892	[1]	5,383,147	[2]
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		38,147,421	[1]	38,497,436	[2]
Cumulative Unrealized Gain		2,286,549	[1]	2,648,201	[2]
Estimated Fair Value		40,433,970	[1]	41,145,637	[2]
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		6,052,124	[7]	6,123,600	[8]
Cumulative Unrealized Gain		499,260	[7]	593,430	[8]
Estimated Fair Value		6,551,384	[7]	6,717,030	[8]
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		14,748,623	[7]	14,928,425	[8]
Cumulative Unrealized Gain		1,066,658	[7]	1,346,449	[8]
Estimated Fair Value		15,815,281	[7]	16,274,874	[8]
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		4,798,619	[7]	4,855,291	[8]
Cumulative Unrealized Gain		383,597	[7]	470,520	[8]
Estimated Fair Value		5,182,216	[7]	5,325,811	[8]
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		17,094,106	[3]	17,220,941	[4],[11]
Cumulative Unrealized Loss	[4],[11]			(13,366)
Estimated Fair Value		17,094,106	[3]	17,207,575	[4],[11]
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		18,021,427	[3]	18,190,721	[4]
Cumulative Unrealized Gain		1,482,518	[3]	1,807,038	[4]
Estimated Fair Value		19,503,945	[3]	19,997,759	[4]
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		12,624,862	[3]	12,743,460	[4]
Cumulative Unrealized Gain		1,038,574	[3]	1,302,221	[4]
Estimated Fair Value		13,663,436	[3]	14,045,681	[4]
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		19,557,264	[3]	19,740,985	[4]
Cumulative Unrealized Gain		1,658,290	[3]	2,017,280	[4]
Estimated Fair Value		21,215,554	[3]	21,758,265	[4]
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		7,013,109	[3]	7,082,698	[4]
Cumulative Unrealized Gain		448,177	[3]	565,843	[4]
Estimated Fair Value		7,461,286	[3]	7,648,541	[4]
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		21,472,292	[3]	21,646,255	[4],[11]
Cumulative Unrealized Loss	[4],[11]			(16,674)
Estimated Fair Value		21,472,292	[3]	21,629,581	[4],[11]
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		18,621,264	[3]	18,751,278	[4]
Cumulative Unrealized Gain		1,897,879	[3]	2,480,537	[4]
Estimated Fair Value		20,519,143	[3]	21,231,815	[4]
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		6,420,622	[3]	6,484,332	[4]
Cumulative Unrealized Gain		483,333	[3]	602,199	[4]
Estimated Fair Value		6,903,955	[3]	7,086,531	[4]
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		10,076,722	[5]	10,186,405	[6]
Cumulative Unrealized Gain		471,599	[5]	606,579	[6]
Estimated Fair Value		10,548,321	[5]	10,792,984	[6]
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		11,696,347	[3]	11,790,848	[4]
Cumulative Unrealized Gain		616,020	[3]	838,472	[4]
Estimated Fair Value		12,312,367	[3]	12,629,320	[4]
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	[15]			23,000,000
Cumulative Unrealized Gain	[15]			192,788
Estimated Fair Value	[15]			23,192,788
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		9,306,460	[3]	9,371,808	[4]
Cumulative Unrealized Gain		1,309,587	[3]	1,478,567	[4]
Estimated Fair Value		10,616,047	[3]	10,850,375	[4]
Mortgage Revenue Bonds Held In Trust [Member] | Aventine Apartments [Member] | WA [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances	[1]	9,500,000
Cumulative Unrealized Gain	[1]	1,352,375
Estimated Fair Value	[1]	10,852,375
Mortgage Revenue Bonds [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		6,122,680		44,414,740
Cumulative Unrealized Gain		404,463		3,290,695
Cumulative Unrealized Loss				(60,926)
Estimated Fair Value		6,527,143		47,644,509
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				3,757,268
Cumulative Unrealized Gain				158,840
Estimated Fair Value				3,916,108
Mortgage Revenue Bonds [Member] | Ocotillo Springs Series A [Member] | CA [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances	[18]			3,489,096
Cumulative Unrealized Loss	[18]			(59,805)
Estimated Fair Value	[18]			3,429,291
Mortgage Revenue Bonds [Member] | Ocotillo Springs Series A 1 [Member] | CA [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances				499,117
Cumulative Unrealized Gain				95,386
Estimated Fair Value				594,503
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				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				2,611,955
Cumulative Unrealized Gain				338,125
Estimated Fair Value				2,950,080
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				300,188
Estimated Fair Value				2,450,188
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				7,229,475
Cumulative Unrealized Gain				1,071,177
Estimated Fair Value				8,300,652
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				926,475
Estimated Fair Value				926,475
Mortgage Revenue Bonds [Member] | Wellspring Apartments [Member] | CA [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		3,909,696
Cumulative Unrealized Gain		270,269
Estimated Fair Value		4,179,965
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		713,129		718,332
Cumulative Unrealized Gain		42,274		49,845
Estimated Fair Value		755,403		768,177
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		522,660		526,318
Cumulative Unrealized Gain		29,336		35,066
Estimated Fair Value		551,996		561,384
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		122,305		122,701
Cumulative Unrealized Gain		16,079		19,352
Estimated Fair Value		138,384		142,053
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		431,147		434,165
Cumulative Unrealized Gain		24,199		28,926
Estimated Fair Value		455,346		463,091
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		423,743		426,835
Cumulative Unrealized Gain		22,306		27,507
Estimated Fair Value		$ 446,049		454,342
Mortgage Revenue Bonds [Member] | Runnymede [Member] | TX [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances	[19]			9,390,000
Cumulative Unrealized Loss	[19]			(1,121)
Estimated Fair Value	[19]			9,388,879
Mortgage Revenue Bonds [Member] | Southpark [Member] | TX [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances				11,133,003
Cumulative Unrealized Gain				1,166,283
Estimated Fair Value				$ 12,299,286

[1] MRB held by Mizuho in a debt financing transaction, Note 13.

[2] MRB held by Mizuho in a debt 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] MRB owned by ATAX TEBS II, LLC (M31 TEBS), Note 13. The TEBS financing has contractual limitations on the Partnership’s ability to sell the MRB.

[8] MRB owned by ATAX TEBS II, LLC (M31 TEBS), Note 13. The TEBS financing has contractual limitations on the Partnership’s ability to sell the MRB.

[9] MRB held by Barclays Capital Inc. in a debt financing transaction, Note 13.

[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 September 30, 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, 2023, 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 $23.2 million as of December 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 funding commitment outstanding as of December 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 December 31, 2023, 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 $7.3 million as of September 30, 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 September 30, 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 September 30, 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 September 30, 2024, the MRB has been in an unrealized loss position for less than 12 months

[15] MRB held by Barclays Capital Inc. in a debt financing transaction, Note 13.

[16] MRB held by Morgan Stanley in a debt financing transaction, Note 13.

[17] MRB held by Morgan Stanley in a debt financing transaction, Note 13.

[18] 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, 2023, the MRB has been in an unrealized loss position for more than 12 months.

[19] 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, 2023, the MRB has been in an unrealized loss position for less than 12 months.