Mortgage Revenue Bonds - Schedule of Investments in MRBs (Details) - USD ($)		Dec. 31, 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		$ 825,040,234		$ 718,413,130
Cumulative Unrealized Gain		58,971,739		45,127,126
Cumulative Unrealized Loss		(981,187)		(331,311)
Estimated Fair Value		883,030,786		763,208,945
Mortgage Revenue Bonds Held In Trust [Member] | NM [Member]
Schedule Of Available For Sale Securities [Line Items]
Estimated Fair Value	[1]			17,669,570
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	[2]	7,667,299
Cumulative Unrealized Gain	[2]	2,717,033
Estimated Fair Value	[2]	10,384,332
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	[2]	5,964,008
Cumulative Unrealized Gain	[2]	739,204
Estimated Fair Value	[2]	6,703,212
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	[3]	9,774,107		9,874,603
Cumulative Unrealized Gain	[3]	845,146		888,242
Estimated Fair Value	[3]	10,619,253		10,762,845
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]	4,312,025		4,372,370
Cumulative Unrealized Gain	[4]	298,507		309,570
Estimated Fair Value	[4]	4,610,532		4,681,940
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]	3,563,775		3,600,418
Cumulative Unrealized Gain	[3]	275,305		274,456
Estimated Fair Value	[3]	3,839,080		3,874,874
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	[3]	6,598,285		6,665,787
Cumulative Unrealized Gain	[3]	573,928		625,752
Estimated Fair Value	[3]	7,172,213		7,291,539
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		6,355,567	[3]	6,449,455	[5]
Cumulative Unrealized Gain		441,345	[3]	581,466	[5]
Estimated Fair Value		6,796,912	[3]	7,030,921	[5]
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	[3]	1,616,607		1,633,397
Cumulative Unrealized Gain	[3]	128,930		140,681
Estimated Fair Value	[3]	1,745,537		1,774,078
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		10,352,000	[6],[7]	10,352,000	[2]
Cumulative Unrealized Gain	[2]			127,107
Cumulative Unrealized Loss	[6],[7]	(30,994)
Estimated Fair Value		10,321,006	[6],[7]	10,479,107	[2]
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	[4]	2,336,065		2,368,757
Cumulative Unrealized Gain	[4]	170,291		199,617
Estimated Fair Value	[4]	2,506,356		2,568,374
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	[2]	7,442,435		7,507,111
Cumulative Unrealized Gain	[2]	846,333		834,292
Estimated Fair Value	[2]	8,288,768		8,341,403
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	[2]	6,607,973		6,656,219
Cumulative Unrealized Gain	[2]	992,675		902,690
Estimated Fair Value	[2]	7,600,648		7,558,909
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	[2]	14,117,540
Cumulative Unrealized Gain	[2]	1,004,021
Estimated Fair Value	[2]	15,121,561
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	[2]	4,000,000
Cumulative Unrealized Gain	[2]	320,446
Estimated Fair Value	[2]	4,320,446
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	[2]	5,055,000
Cumulative Unrealized Gain	[2]	575,709
Estimated Fair Value	[2]	5,630,709
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	[2],[6]			11,090,000
Cumulative Unrealized Loss	[2],[6]			(331,311)
Estimated Fair Value	[2],[6]			10,758,689
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	[2]	9,085,429		9,088,496
Cumulative Unrealized Gain	[2]	181,504		122,815
Estimated Fair Value	[2]	9,266,933		9,211,311
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	[2]	7,500,000		7,500,000
Cumulative Unrealized Gain	[2]	222,445		176,092
Estimated Fair Value	[2]	7,722,445		7,676,092
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	[2]	12,300,000		3,900,000
Cumulative Unrealized Gain	[2]	697,895		726,834
Estimated Fair Value	[2]	12,997,895		4,626,834
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	[2]	29,560,945		26,067,585
Estimated Fair Value	[2]	29,560,945		26,067,585
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]	3,333,357		3,367,978
Cumulative Unrealized Gain	[3]	265,848		255,787
Estimated Fair Value	[3]	3,599,205		3,623,765
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	[4]	2,830,055		2,869,660
Cumulative Unrealized Gain	[4]	206,301		216,000
Estimated Fair Value	[4]	3,036,356		3,085,660
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	[3]	4,083,273		4,137,438
Cumulative Unrealized Gain	[3]	443,901		522,910
Estimated Fair Value	[3]	4,527,174		4,660,348
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	[3]	7,028,608		7,100,512
Cumulative Unrealized Gain	[3]	611,358		666,562
Estimated Fair Value	[3]	7,639,966		7,767,074
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	[3]	11,833,880		11,954,944
Cumulative Unrealized Gain	[3]	992,473		1,038,904
Estimated Fair Value	[3]	12,826,353		12,993,848
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	[3]	6,136,763		6,199,861
Cumulative Unrealized Gain	[3]	381,019		265,296
Estimated Fair Value	[3]	6,517,782		6,465,157
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]	3,380,901		3,428,986
Cumulative Unrealized Gain	[3]	226,216		124,598
Estimated Fair Value	[3]	3,607,117		3,553,584
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	[3]	2,947,519		2,977,825
Cumulative Unrealized Gain	[3]	227,699		247,354
Estimated Fair Value	[3]	3,175,218		3,225,179
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]	5,533,307		5,616,043
Cumulative Unrealized Gain	[5]	119,693		264,300
Estimated Fair Value	[5]	5,653,000		5,880,343
Mortgage Revenue Bonds Held In Trust [Member] | Village at Hanford Square [Member] | Series H Mortgage [Member] | CA [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances	[2]	10,400,000
Cumulative Unrealized Gain	[2]	1,073,808
Estimated Fair Value	[2]	11,473,808
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		3,874,962	[2]	3,908,104	[8]
Cumulative Unrealized Gain		461,663	[2]	514,719	[8]
Estimated Fair Value		4,336,625	[2]	4,422,823	[8]
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		3,616,007	[5]	3,670,075	[9]
Cumulative Unrealized Gain		223,459	[5]	267,369	[9]
Estimated Fair Value		3,839,466	[5]	3,937,444	[9]
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	[2]	5,900,000
Cumulative Unrealized Gain	[2]	880,643
Estimated Fair Value	[2]	6,780,643
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	[10]			7,286,052
Cumulative Unrealized Gain	[10]			1,286,871
Estimated Fair Value	[10]			8,572,923
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	[5],[6]	4,840,000	[9]
Cumulative Unrealized Gain	[9]			117,014
Cumulative Unrealized Loss	[5],[6]	(5)
Estimated Fair Value		4,779,995	[5],[6]	4,957,014	[9]
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		10,429,392	[4]	10,585,375	[11]
Cumulative Unrealized Gain		1,221,077	[4]	645,412	[11]
Estimated Fair Value		11,650,469	[4]	11,230,787	[11]
Mortgage Revenue Bonds Held In Trust [Member] | Live 929 Apartments [Member] | Series A [Member] | MD [Member]
Schedule Of Available For Sale Securities [Line Items]
Cumulative Unrealized Gain	[8]			2,217,857
Estimated Fair Value	[8]			60,325,119
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	[2]	58,333,646
Cumulative Unrealized Gain	[2]	3,275,636
Estimated Fair Value	[2]	61,609,282
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] | Jackson Manor Apartments [Member] | MS [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		4,824,474	[2]	6,900,000	[8]
Cumulative Unrealized Gain	[2]	209,082
Estimated Fair Value		5,033,556	[2]	6,900,000	[8]
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]	23,000,000
Cumulative Unrealized Gain	[7]	192,788
Estimated Fair Value	[7]	23,192,788
Mortgage Revenue Bonds Held In Trust [Member] | Silver Moon [Member] | NM [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances	[11]			7,557,312
Cumulative Unrealized Gain	[11]			863,401
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	[4]	7,480,455
Cumulative Unrealized Gain	[4]	928,841
Estimated Fair Value		8,409,296	[4]	8,420,713	[11]
Mortgage Revenue Bonds Held In Trust [Member] | Greens Property [Member] | NC [Member]
Schedule Of Available For Sale Securities [Line Items]
Cumulative Unrealized Gain	[9]			597
Mortgage Revenue Bonds Held In Trust [Member] | Greens Property [Member] | Series A [Member] | NC [Member]
Schedule Of Available For Sale Securities [Line Items]
Estimated Fair Value	[9]			7,599,597
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		15,808,184	[13]	15,942,560	[1]
Cumulative Unrealized Gain		1,962,627	[13]	1,727,010	[1]
Estimated Fair Value	[13]	17,770,811
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		12,351,218	[3]	12,542,207	[14]
Cumulative Unrealized Gain		807,633	[3]	968,469	[14]
Estimated Fair Value		13,158,851	[3]	13,510,676	[14]
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		10,639,506	[3]	10,786,181	[14]
Cumulative Unrealized Gain		598,197	[3]	709,979	[14]
Estimated Fair Value		11,237,703	[3]	11,496,160	[14]
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	[2]	30,567,832
Cumulative Unrealized Gain	[2]	1,933,208
Estimated Fair Value	[2]	32,501,040
Mortgage Revenue Bonds Held In Trust [Member] | The Palms at Premier Park [Member] | SC [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		17,872,527	[5]	18,137,042	[9]
Cumulative Unrealized Gain		427,099	[5]	808,555	[9]
Estimated Fair Value		18,299,626	[5]	18,945,597	[9]
Mortgage Revenue Bonds Held In Trust [Member] | The Park at Sondrio [Member] | SC [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances	[8]			38,100,000
Estimated Fair Value	[8]			38,100,000
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	[2]	38,100,000
Cumulative Unrealized Gain	[2]	2,682,964
Estimated Fair Value	[2]	40,782,964
Mortgage Revenue Bonds Held In Trust [Member] | The Park at Vietti [Member] | SC [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances	[8]			26,985,000
Estimated Fair Value	[8]			26,985,000
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	[2]	26,985,000
Cumulative Unrealized Gain	[2]	1,972,695
Estimated Fair Value	[2]	28,957,695
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		9,566,110	[3]	9,649,659	[14]
Cumulative Unrealized Gain		1,000,545	[3]	590,962	[14]
Estimated Fair Value		10,566,655	[3]	10,240,621	[14]
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		12,180,025	[3]	12,368,964	[14]
Cumulative Unrealized Gain		817,941	[3]	953,988	[14]
Estimated Fair Value		12,997,966	[3]	13,322,952	[14]
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	[2]	21,545,000
Cumulative Unrealized Gain	[2]	1,530,085
Estimated Fair Value	[2]	23,075,085
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	[9]			10,591,726
Cumulative Unrealized Gain	[9]			2,005,029
Estimated Fair Value	[9]			12,596,755
Mortgage Revenue Bonds Held In Trust [Member] | Arbors at Hickory Ridge [Member] | Series A [Member] | TN [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances	[5]	10,417,646
Cumulative Unrealized Gain	[5]	1,805,985
Estimated Fair Value	[5]	12,223,631
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		13,378,386	[2]	13,532,636	[8]
Cumulative Unrealized Gain		983,586	[2]	919,463	[8]
Estimated Fair Value		14,361,972	[2]	14,452,099	[8]
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		8,762,826	[5]	8,896,378	[9]
Cumulative Unrealized Gain		909,437	[5]	975,504	[9]
Estimated Fair Value		9,672,263	[5]	9,871,882	[9]
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		7,091,928	[5]	7,196,674	[9]
Cumulative Unrealized Gain		666,990	[5]	717,701	[9]
Estimated Fair Value		7,758,918	[5]	7,914,375	[9]
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		12,270,653	[4]	12,429,842	[11]
Cumulative Unrealized Gain		830,179	[4]	950,930	[11]
Estimated Fair Value		13,100,832	[4]	13,380,772	[11]
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		5,070,137	[2]	5,128,595	[8]
Cumulative Unrealized Gain		313,010	[2]	170,370	[8]
Estimated Fair Value		5,383,147	[2]	5,298,965	[8]
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		38,497,436	[2]	38,941,304	[8]
Cumulative Unrealized Gain		2,648,201	[2]	2,645,832	[8]
Estimated Fair Value		41,145,637	[2]	41,587,136	[8]
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		6,123,600	[5]	6,214,048	[9]
Cumulative Unrealized Gain		593,430	[5]	619,707	[9]
Estimated Fair Value		6,717,030	[5]	6,833,755	[9]
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		14,928,425	[5]	15,155,942	[9]
Cumulative Unrealized Gain		1,346,449	[5]	1,290,551	[9]
Estimated Fair Value		16,274,874	[5]	16,446,493	[9]
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		4,855,291	[5]	4,927,003	[9]
Cumulative Unrealized Gain		470,520	[5]	523,079	[9]
Estimated Fair Value		5,325,811	[5]	5,450,082	[9]
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		17,220,941	[3],[6]	17,381,296	[9],[14]
Cumulative Unrealized Gain	[14]			281,271
Cumulative Unrealized Loss	[3],[6]	(13,366)
Estimated Fair Value		17,207,575	[3],[6]	17,662,567	[14]
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		18,190,721	[3]	18,404,942	[14]
Cumulative Unrealized Gain		1,807,038	[3]	1,842,303	[14]
Estimated Fair Value		19,997,759	[3]	20,247,245	[14]
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		12,743,460	[3]	12,893,533	[14]
Cumulative Unrealized Gain		1,302,221	[3]	1,249,523	[14]
Estimated Fair Value		14,045,681	[3]	14,143,056	[14]
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		19,740,985	[3]	19,973,464	[14]
Cumulative Unrealized Gain		2,017,280	[3]	1,935,645	[14]
Estimated Fair Value		21,758,265	[3]	21,909,109	[14]
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		7,082,698	[3]	7,170,756	[14]
Cumulative Unrealized Gain		565,843	[3]	605,369	[14]
Estimated Fair Value		7,648,541	[3]	7,776,125	[14]
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		21,646,255	[3],[6]	21,866,672	[14]
Cumulative Unrealized Gain	[14]			77,837
Cumulative Unrealized Loss	[3],[6]	(16,674)
Estimated Fair Value		21,629,581	[3],[6]	21,944,509	[14]
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		18,751,278	[3]	18,916,082	[14]
Cumulative Unrealized Gain		2,480,537	[3]	2,209,462	[14]
Estimated Fair Value		21,231,815	[3]	21,125,544	[14]
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		6,484,332	[3]	6,564,951	[14]
Cumulative Unrealized Gain		602,199	[3]	573,569	[14]
Estimated Fair Value		7,086,531	[3]	7,138,520	[14]
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		10,186,405	[4]	10,325,196	[11]
Cumulative Unrealized Gain		606,579	[4]	671,790	[11]
Estimated Fair Value		10,792,984	[4]	10,996,986	[11]
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		11,790,848	[3]	11,911,472	[14]
Cumulative Unrealized Gain		838,472	[3]	746,300	[14]
Estimated Fair Value		12,629,320	[3]	12,657,772	[14]
Mortgage Revenue Bonds Held In Trust [Member] | 15 West Apartments [Member] | TX [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances	[3]	9,371,808
Cumulative Unrealized Gain	[3]	1,478,567
Estimated Fair Value	[3]	10,850,375
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	[14]			9,454,318
Cumulative Unrealized Gain	[14]			1,534,060
Estimated Fair Value	[14]			10,988,378
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	[10]			9,535,000
Cumulative Unrealized Gain	[10]			45,577
Estimated Fair Value	[10]			9,580,577
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	[10]			11,257,062
Cumulative Unrealized Gain	[10]			1,352,726
Estimated Fair Value	[10]			12,609,788
Mortgage Revenue Bonds [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		44,414,740		36,888,068
Cumulative Unrealized Gain		3,290,695		504,076
Cumulative Unrealized Loss		(60,926)		(1,193,085)
Estimated Fair Value		47,644,509		36,199,059
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
Estimated Fair Value				55,000
Mortgage Revenue Bonds [Member] | Brookstone [Member] | IL [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] | Live 929 Apartments [Member] | Series A [Member] | MD [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances	[8]			58,107,262
Mortgage Revenue Bonds [Member] | Meadow Valley [Member] | MI [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances	[15]			4,833,437
Cumulative Unrealized Loss				(1,193,085)
Estimated Fair Value				3,640,352
Mortgage Revenue Bonds [Member] | Greens Property [Member] | NC [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances	[9]			7,599,000
Mortgage Revenue Bonds [Member] | Greens Property [Member] | Series B [Member] | NC [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances				915,039
Cumulative Unrealized Gain				122
Estimated Fair Value				915,161
Mortgage Revenue Bonds [Member] | Avistar at the Crest [Member] | Series B [Member] | TX [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		718,332		724,747
Cumulative Unrealized Gain		49,845		53,132
Estimated Fair Value		768,177		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		526,318		530,829
Cumulative Unrealized Gain		35,066		33,406
Estimated Fair Value		561,384		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		122,701		123,176
Cumulative Unrealized Gain		19,352		22,510
Estimated Fair Value		142,053		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		434,165		437,886
Cumulative Unrealized Gain		28,926		27,557
Estimated Fair Value		463,091		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		426,835		430,647
Cumulative Unrealized Gain		27,507		26,816
Estimated Fair Value		454,342		457,463
Mortgage Revenue Bonds [Member] | C C B A Senior Garden Apartments [Member] | CA [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		3,757,268		3,792,700
Cumulative Unrealized Gain		158,840		42,672
Estimated Fair Value		3,916,108		3,835,372
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	[6]	3,489,096
Cumulative Unrealized Loss	[6]	(59,805)
Estimated Fair Value	[6]	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 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		2,611,955		2,631,168
Cumulative Unrealized Gain		338,125		297,861
Estimated Fair Value		2,950,080		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		300,188
Estimated Fair Value		2,450,188
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		4,294,939
Estimated Fair Value		926,475		$ 4,294,939
Mortgage Revenue Bonds [Member] | Runnymede [Member] | TX [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances	[6]	9,390,000
Cumulative Unrealized Loss	[6]	(1,121)
Estimated Fair Value	[6]	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 Morgan Stanley in a debt financing transaction, Note 16.

[2] MRB held by Mizuho Capital Markets, LLC in a debt financing transaction, Note 16

[3] 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.

[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] 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.

[7] MRB held by Barclays Capital Inc. in a debt financing transaction, Note 16.

[8] MRB held by Mizuho Capital Markets, LLC in a debt financing transaction, Note 16.

[9] 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.

[10] 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.

[11] 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.

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

[14] 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.

[15] 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 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. As of December 31, 2022, the MRB has been in an unrealized loss position for more than 12 months.