Mortgage Revenue Bonds - Schedule of Investments in MRBs (Details) - USD ($)		Jun. 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		$ 951,454,320		$ 825,040,234
Cumulative Unrealized Gain		41,969,667		58,971,739
Cumulative Unrealized Loss		(3,356,913)		(981,187)
Estimated Fair Value		990,067,074		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		19,366,284	[1]	7,667,299	[2]
Cumulative Unrealized Gain		1,672,241	[1]	2,717,033	[2]
Estimated Fair Value		21,038,525	[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		5,963,133	[1]	5,964,008	[2]
Cumulative Unrealized Gain		498,774	[1]	739,204	[2]
Estimated Fair Value		6,461,907	[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		9,721,946	[3]	9,774,107	[4]
Cumulative Unrealized Gain		463,674	[3]	845,146	[4]
Estimated Fair Value		10,185,620	[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		4,280,530	[5]	4,312,025	[6]
Cumulative Unrealized Gain		168,744	[5]	298,507	[6]
Estimated Fair Value		4,449,274	[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		3,544,757	[3]	3,563,775	[4]
Cumulative Unrealized Gain		139,578	[3]	275,305	[4]
Estimated Fair Value		3,684,335	[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		6,563,249	[3]	6,598,285	[4]
Cumulative Unrealized Gain		315,187	[3]	573,928	[4]
Estimated Fair Value		6,878,436	[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		6,306,564	[7]	6,355,567	[8]
Cumulative Unrealized Gain		279,216	[7]	441,345	[8]
Estimated Fair Value		6,585,780	[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		1,607,892	[3]	1,616,607	[4]
Cumulative Unrealized Gain		67,293	[3]	128,930	[4]
Estimated Fair Value		1,675,185	[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]	10,352,000
Cumulative Unrealized Loss	[9],[10]	(37,286)
Estimated Fair Value	[9],[10]	10,314,714
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		2,319,002	[5]	2,336,065	[4]
Cumulative Unrealized Gain		106,080	[5]	170,291	[4]
Estimated Fair Value		2,425,082	[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		7,408,742	[1]	7,442,435	[2]
Cumulative Unrealized Gain		506,313	[1]	846,333	[2]
Estimated Fair Value		7,915,055	[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		6,582,792	[1]	6,607,973	[2]
Cumulative Unrealized Gain		671,125	[1]	992,675	[2]
Estimated Fair Value		7,253,917	[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],[9]	3,472,440
Cumulative Unrealized Loss	[1],[9]	(166,594)
Estimated Fair Value	[1],[9]	3,305,846
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]	497,756
Cumulative Unrealized Gain	[1]	76,732
Estimated Fair Value	[1]	574,488
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]	3,738,947
Cumulative Unrealized Gain	[1]	14,974
Estimated Fair Value	[1]	3,753,921
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		14,114,724	[1]	14,117,540	[2]
Cumulative Unrealized Gain		515,319	[1]	1,004,021	[2]
Estimated Fair Value		14,630,043	[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		180,012	[1]	320,446	[2]
Estimated Fair Value		4,180,012	[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		485,236	[1]	575,709	[2]
Estimated Fair Value		14,485,236	[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]	5,500,000
Cumulative Unrealized Gain	[1]	87,202
Estimated Fair Value	[1]	5,587,202
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		9,082,069	[1]	9,085,429	[2]
Cumulative Unrealized Gain	[2]			181,504
Estimated Fair Value		9,082,069	[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	[2]			222,445
Estimated Fair Value		7,500,000	[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		353,343	[1]	697,895	[2]
Estimated Fair Value		26,433,343	[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]	3,820,000
Estimated Fair Value	[1]	3,820,000
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]	2,601,920
Cumulative Unrealized Gain	[1]	228,174
Estimated Fair Value	[1]	2,830,094
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		29,558,156	[1]	29,560,945	[2]
Estimated Fair Value		29,558,156	[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		3,315,388	[3]	3,333,357	[4]
Cumulative Unrealized Gain		138,754	[3]	265,848	[4]
Estimated Fair Value		3,454,142	[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		2,809,384	[5]	2,830,055	[6]
Cumulative Unrealized Gain		128,512	[5]	206,301	[6]
Estimated Fair Value		2,937,896	[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		4,055,003	[3]	4,083,273	[4]
Cumulative Unrealized Gain		290,903	[3]	443,901	[4]
Estimated Fair Value		4,345,906	[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		6,991,287	[3]	7,028,608	[4]
Cumulative Unrealized Gain		335,743	[3]	611,358	[4]
Estimated Fair Value		7,327,030	[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		11,771,045	[3]	11,833,880	[4]
Cumulative Unrealized Gain		532,184	[3]	992,473	[4]
Estimated Fair Value		12,303,229	[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		6,104,014	[3]	6,136,763	[4]
Cumulative Unrealized Gain		156,751	[3]	381,019	[4]
Estimated Fair Value		6,260,765	[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		3,355,897	[3],[11]	3,380,901	[4]
Cumulative Unrealized Gain	[4]			226,216
Cumulative Unrealized Loss	[3],[11]	(90,471)
Estimated Fair Value		3,265,426	[3],[11]	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		2,931,789	[3]	2,947,519	[4]
Cumulative Unrealized Gain		131,674	[3]	227,699	[4]
Estimated Fair Value		3,063,463	[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		5,490,125	[7]	5,533,307	[8]
Cumulative Unrealized Gain		48,868	[7]	119,693	[8]
Estimated Fair Value		5,538,993	[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		672,773	[1]	1,073,808	[2]
Estimated Fair Value		11,072,773	[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		3,857,697	[1]	3,874,962	[2]
Cumulative Unrealized Gain		305,160	[1]	461,663	[2]
Estimated Fair Value		4,162,857	[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		3,587,787	[7]	3,616,007	[8]
Cumulative Unrealized Gain		129,900	[7]	223,459	[8]
Estimated Fair Value		3,717,687	[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]	210,988
Estimated Fair Value	[1]	2,360,988
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		631,693	[1]	880,643	[2]
Estimated Fair Value		6,531,693	[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],[12]
Cumulative Unrealized Loss	[8],[12]			(5)
Estimated Fair Value		4,780,000	[7]	4,779,995	[8],[12]
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		10,347,829	[5]	10,429,392	[6]
Cumulative Unrealized Gain		714,728	[5]	1,221,077	[6]
Estimated Fair Value		11,062,557	[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		58,447,151	[1]	58,333,646	[2]
Cumulative Unrealized Gain		3,120,322	[1]	3,275,636	[2]
Estimated Fair Value		61,567,473	[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]	3,329,090
Estimated Fair Value	[1]	34,479,090
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],[13]			20,863,114
Cumulative Unrealized Loss	[2],[13]			(920,148)
Estimated Fair Value	[2],[13]			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],[14]	29,633,720
Cumulative Unrealized Loss	[1],[14]	(2,056,854)
Estimated Fair Value	[1],[14]	27,576,866
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		4,803,044	[1],[11]	4,824,474	[2]
Cumulative Unrealized Gain	[2]			209,082
Cumulative Unrealized Loss	[1],[11]	(361,176)
Estimated Fair Value		4,441,868	[1],[11]	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	[10],[11]	23,000,000
Cumulative Unrealized Loss	[10],[11]	(475,083)
Estimated Fair Value	[10],[11]	22,524,917
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	[12],[15]			10,352,000
Cumulative Unrealized Loss	[12],[15]			(30,994)
Estimated Fair Value	[12],[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		7,440,266	[5]	7,480,455	[6]
Cumulative Unrealized Gain		623,237	[5]	928,841	[6]
Estimated Fair Value		8,063,503	[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		15,738,023	[16]	15,808,184	[17]
Cumulative Unrealized Gain		1,364,391	[16]	1,962,627	[17]
Estimated Fair Value		17,102,414	[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		12,252,320	[3]	12,351,218	[4]
Cumulative Unrealized Gain		499,675	[3]	807,633	[4]
Estimated Fair Value		12,751,995	[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		10,562,925	[3]	10,639,506	[4]
Cumulative Unrealized Gain		350,758	[3]	598,197	[4]
Estimated Fair Value		10,913,683	[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		30,563,203	[1]	30,567,832	[2]
Cumulative Unrealized Gain		880,309	[1]	1,933,208	[2]
Estimated Fair Value		31,443,512	[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		17,733,956	[7]	17,872,527	[8]
Cumulative Unrealized Gain		182,998	[7]	427,099	[8]
Estimated Fair Value		17,916,954	[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		1,346,314	[1]	2,682,964	[2]
Estimated Fair Value		39,446,314	[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		1,018,466	[1]	1,972,695	[2]
Estimated Fair Value		28,003,466	[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		9,522,422	[3]	9,566,110	[4]
Cumulative Unrealized Gain		981,576	[3]	1,000,545	[4]
Estimated Fair Value		10,503,998	[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		12,082,152	[3]	12,180,025	[4]
Cumulative Unrealized Gain		492,032	[3]	817,941	[4]
Estimated Fair Value		12,574,184	[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		771,092	[1]	1,530,085	[2]
Estimated Fair Value		22,316,092	[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		10,326,690	[7]	10,417,646	[8]
Cumulative Unrealized Gain		1,341,180	[7]	1,805,985	[8]
Estimated Fair Value		11,667,870	[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		13,297,878	[1]	13,378,386	[2]
Cumulative Unrealized Gain		492,717	[1]	983,586	[2]
Estimated Fair Value		13,790,595	[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		8,692,991	[7]	8,762,826	[8]
Cumulative Unrealized Gain		576,349	[7]	909,437	[8]
Estimated Fair Value		9,269,340	[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		7,037,156	[7]	7,091,928	[8]
Cumulative Unrealized Gain		401,163	[7]	666,990	[8]
Estimated Fair Value		7,438,319	[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		12,187,414	[5]	12,270,653	[6]
Cumulative Unrealized Gain		398,703	[5]	830,179	[6]
Estimated Fair Value		12,586,117	[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		5,039,627	[1]	5,070,137	[2]
Cumulative Unrealized Gain		186,730	[1]	313,010	[2]
Estimated Fair Value		5,226,357	[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		38,265,770	[1]	38,497,436	[2]
Cumulative Unrealized Gain		1,417,834	[1]	2,648,201	[2]
Estimated Fair Value		39,683,604	[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		6,076,307	[7]	6,123,600	[8]
Cumulative Unrealized Gain		362,062	[7]	593,430	[8]
Estimated Fair Value		6,438,369	[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		14,809,456	[7]	14,928,425	[8]
Cumulative Unrealized Gain		801,134	[7]	1,346,449	[8]
Estimated Fair Value		15,610,590	[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		4,817,793	[7]	4,855,291	[8]
Cumulative Unrealized Gain		274,645	[7]	470,520	[8]
Estimated Fair Value		5,092,438	[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		17,137,029	[3],[11]	17,220,941	[4],[12]
Cumulative Unrealized Loss		(25,276)	[3],[11]	(13,366)	[4],[12]
Estimated Fair Value		17,111,753	[3],[11]	17,207,575	[4],[12]
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		18,078,705	[3]	18,190,721	[4]
Cumulative Unrealized Gain		1,117,426	[3]	1,807,038	[4]
Estimated Fair Value		19,196,131	[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		12,664,988	[3]	12,743,460	[4]
Cumulative Unrealized Gain		815,278	[3]	1,302,221	[4]
Estimated Fair Value		13,480,266	[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		19,619,423	[3]	19,740,985	[4]
Cumulative Unrealized Gain		1,262,953	[3]	2,017,280	[4]
Estimated Fair Value		20,882,376	[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		7,036,653	[3]	7,082,698	[4]
Cumulative Unrealized Gain		284,274	[3]	565,843	[4]
Estimated Fair Value		7,320,927	[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		21,531,128	[3],[11]	21,646,255	[4],[12]
Cumulative Unrealized Loss		(144,173)	[3],[11]	(16,674)	[4],[12]
Estimated Fair Value		21,386,955	[3],[11]	21,629,581	[4],[12]
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		18,665,231	[3]	18,751,278	[4]
Cumulative Unrealized Gain		1,605,193	[3]	2,480,537	[4]
Estimated Fair Value		20,270,424	[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		6,442,177	[3]	6,484,332	[4]
Cumulative Unrealized Gain		334,677	[3]	602,199	[4]
Estimated Fair Value		6,776,854	[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		10,113,831	[5]	10,186,405	[6]
Cumulative Unrealized Gain		302,992	[5]	606,579	[6]
Estimated Fair Value		10,416,823	[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		11,728,241	[3]	11,790,848	[4]
Cumulative Unrealized Gain		397,942	[3]	838,472	[4]
Estimated Fair Value		12,126,183	[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] | Southpark [Member] | TX [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances	[1]	11,167,919
Cumulative Unrealized Gain	[1]	1,132,081
Estimated Fair Value	[1]	12,300,000
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		9,328,583	[3]	9,371,808	[4]
Cumulative Unrealized Gain		1,106,537	[3]	1,478,567	[4]
Estimated Fair Value		10,435,120	[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]	1,139,689
Estimated Fair Value	[1]	10,639,689
Mortgage Revenue Bonds [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		11,898,265		44,414,740
Cumulative Unrealized Gain		86,686		3,290,695
Cumulative Unrealized Loss				(60,926)
Estimated Fair Value		11,984,951		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		365,042		926,475
Estimated Fair Value		365,042		926,475
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		714,902		718,332
Cumulative Unrealized Gain		26,684		49,845
Estimated Fair Value		741,586		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		523,907		526,318
Cumulative Unrealized Gain		17,985		35,066
Estimated Fair Value		541,892		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		122,441		122,701
Cumulative Unrealized Gain		14,175		19,352
Estimated Fair Value		136,616		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		432,176		434,165
Cumulative Unrealized Gain		14,836		28,926
Estimated Fair Value		447,012		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		424,797		426,835
Cumulative Unrealized Gain		13,006		27,507
Estimated Fair Value		437,803		454,342
Mortgage Revenue Bonds [Member] | Runnymede [Member] | TX [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		9,315,000		9,390,000	[19]
Cumulative Unrealized Loss	[19]			(1,121)
Estimated Fair Value		$ 9,315,000		9,388,879	[19]
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] 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, 2024, the MRB has been in an unrealized loss position for at least 12 months.

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

[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, 2024, the MRB has been in an unrealized loss position for less 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. As of December 31, 2023, the MRB has been in an unrealized loss position for less than 12 months.

[13] 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.

[14] The Partnership has a remaining MRB funding commitment of approximately $14.5 million as of June 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 June 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 June 30, 2024, the MRB has been in an unrealized loss position for more 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.