Mortgage Revenue Bonds - Schedule of Investments in MRBs (Details) - USD ($)		Dec. 31, 2022		Dec. 31, 2021
Mortgage Revenue Bonds Held In Trust [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		$ 718,413,130		$ 639,116,502
Cumulative Unrealized Gain		45,127,126		111,818,346
Cumulative Unrealized Loss		(331,311)
Estimated Fair Value		763,208,945		750,934,848
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		9,874,603	[1]	9,970,209	[2]
Cumulative Unrealized Gain		888,242	[1]	2,060,480	[2]
Estimated Fair Value		10,762,845	[1]	12,030,689	[2]
Mortgage Revenue Bonds Held In Trust [Member] | Glenview Apartments [Member] | Series A [Member] | CA [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		4,372,370	[3]	4,429,350	[4]
Cumulative Unrealized Gain		309,570	[3]	863,955	[4]
Estimated Fair Value		4,681,940	[3]	5,293,305	[4]
Mortgage Revenue Bonds Held In Trust [Member] | Harmony Court Bakersfield [Member] | Series A [Member] | CA [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		3,600,418	[1]	3,635,277	[2]
Cumulative Unrealized Gain		274,456	[1]	720,308	[2]
Estimated Fair Value		3,874,874	[1]	4,355,585	[2]
Mortgage Revenue Bonds Held In Trust [Member] | Harmony Terrace [Member] | Series A [Member] | CA [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		6,665,787	[1]	6,730,004	[2]
Cumulative Unrealized Gain		625,752	[1]	1,425,757	[2]
Estimated Fair Value		7,291,539	[1]	8,155,761	[2]
Mortgage Revenue Bonds Held In Trust [Member] | Harden Ranch [Member] | Series A [Member] | CA [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		6,449,455	[5]	6,538,111	[6]
Cumulative Unrealized Gain		581,466	[5]	1,285,747	[6]
Estimated Fair Value		7,030,921	[5]	7,823,858	[6]
Mortgage Revenue Bonds Held In Trust [Member] | Las Palmas II [Member] | Series A [Member] | CA [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		1,633,397	[1]	1,649,370	[2]
Cumulative Unrealized Gain		140,681	[1]	332,704	[2]
Estimated Fair Value		1,774,078	[1]	1,982,074	[2]
Mortgage Revenue Bonds Held In Trust [Member] | Lutheran Gardens [Member] | NC [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances	[7]	10,352,000
Cumulative Unrealized Gain	[7]	127,107
Estimated Fair Value	[7]	10,479,107
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		2,368,757	[3]	2,399,626	[4]
Cumulative Unrealized Gain		199,617	[3]	446,912	[4]
Estimated Fair Value		2,568,374	[3]	2,846,538	[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		7,507,111	[7]	7,568,334	[8]
Cumulative Unrealized Gain		834,292	[7]	1,983,454	[8]
Estimated Fair Value		8,341,403	[7]	9,551,788	[8]
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		6,656,219	[7]	6,701,776	[8]
Cumulative Unrealized Gain		902,690	[7]	2,114,978	[8]
Estimated Fair Value		7,558,909	[7]	8,816,754	[8]
Mortgage Revenue Bonds Held In Trust [Member] | Ocotillo Springs [Member] | Series A [Member] | CA [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		11,090,000	[7],[9]	15,000,000	[8]
Cumulative Unrealized Gain	[8]			271,172
Cumulative Unrealized Loss	[7],[9]	(331,311)
Estimated Fair Value		10,758,689	[7],[9]	15,271,172	[8]
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	[7]	9,088,496
Cumulative Unrealized Gain	[7]	122,815
Estimated Fair Value	[7]	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	[7]	7,500,000
Cumulative Unrealized Gain	[7]	176,092
Estimated Fair Value	[7]	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	[7]	3,900,000
Cumulative Unrealized Gain	[7]	726,834
Estimated Fair Value	[7]	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	[7]	26,067,585
Estimated Fair Value	[7]	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		3,367,978	[1]	3,400,913	[2]
Cumulative Unrealized Gain		255,787	[1]	671,681	[2]
Estimated Fair Value		3,623,765	[1]	4,072,594	[2]
Mortgage Revenue Bonds Held In Trust [Member] | Santa Fe Apartments [Member] | Series A [Member] | CA [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		2,869,660	[3]	2,907,057	[4]
Cumulative Unrealized Gain		216,000	[3]	567,028	[4]
Estimated Fair Value		3,085,660	[3]	3,474,085	[4]
Mortgage Revenue Bonds Held In Trust [Member] | Seasons at Simi Valley [Member] | Series A [Member] | CA [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		4,137,438	[1]	4,188,582	[2]
Cumulative Unrealized Gain		522,910	[1]	1,011,623	[2]
Estimated Fair Value		4,660,348	[1]	5,200,205	[2]
Mortgage Revenue Bonds Held In Trust [Member] | Seasons Lakewood [Member] | Series A [Member] | CA [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		7,100,512	[1]	7,168,917	[2]
Cumulative Unrealized Gain		666,562	[1]	1,518,742	[2]
Estimated Fair Value		7,767,074	[1]	8,687,659	[2]
Mortgage Revenue Bonds Held In Trust [Member] | Seasons San Juan Capistrano [Member] | Series A [Member] | CA [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		11,954,944	[1]	12,070,116	[2]
Cumulative Unrealized Gain		1,038,904	[1]	2,557,065	[2]
Estimated Fair Value		12,993,848	[1]	14,627,181	[2]
Mortgage Revenue Bonds Held In Trust [Member] | Summerhill [Member] | Series A [Member] | CA [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		6,199,861	[1]	6,259,888	[2]
Cumulative Unrealized Gain		265,296	[1]	1,187,464	[2]
Estimated Fair Value		6,465,157	[1]	7,447,352	[2]
Mortgage Revenue Bonds Held In Trust [Member] | Sycamore Walk [Member] | Series A [Member] | CA [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		3,428,986	[1]	3,474,617	[2]
Cumulative Unrealized Gain		124,598	[1]	696,090	[2]
Estimated Fair Value		3,553,584	[1]	4,170,707	[2]
Mortgage Revenue Bonds Held In Trust [Member] | The Village at Madera [Member] | Series A [Member] | CA [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		2,977,825	[1]	3,006,656	[2]
Cumulative Unrealized Gain		247,354	[1]	621,367	[2]
Estimated Fair Value		3,225,179	[1]	3,628,023	[2]
Mortgage Revenue Bonds Held In Trust [Member] | Tyler Park Townhomes [Member] | Series A [Member] | CA [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		5,616,043	[5]	5,694,168	[6]
Cumulative Unrealized Gain		264,300	[5]	691,137	[6]
Estimated Fair Value		5,880,343	[5]	6,385,305	[6]
Mortgage Revenue Bonds Held In Trust [Member] | Vineyard Gardens | Series A [Member] | CA [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		3,908,104	[7]	3,939,476	[8]
Cumulative Unrealized Gain		514,719	[7]	987,782	[8]
Estimated Fair Value		4,422,823	[7]	4,927,258	[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		3,670,075	[5]	3,721,129	[6]
Cumulative Unrealized Gain		267,369	[5]	701,915	[6]
Estimated Fair Value		3,937,444	[5]	4,423,044	[6]
Mortgage Revenue Bonds Held In Trust [Member] | Brookstone [Member] | IL [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		7,286,052	[10]	7,334,161	[11]
Cumulative Unrealized Gain		1,286,871	[10]	1,903,086	[11]
Estimated Fair Value		8,572,923	[10]	9,237,247	[11]
Mortgage Revenue Bonds Held In Trust [Member] | Copper Gate Apartments [Member] | IN [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		4,840,000	[5]	4,900,000	[6]
Cumulative Unrealized Gain		117,014	[5]	433,436	[6]
Estimated Fair Value		4,957,014	[5]	5,333,436	[6]
Mortgage Revenue Bonds Held In Trust [Member] | Renaissance [Member] | Series A [Member] | LA [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		10,585,375	[3]	10,732,295	[4]
Cumulative Unrealized Gain		645,412	[3]	4,172,381	[4]
Estimated Fair Value		11,230,787	[3]	14,904,676	[4]
Mortgage Revenue Bonds Held In Trust [Member] | Live 929 Apartments [Member] | 2014 Series A [Member] | MD [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances	[8]			36,169,147
Cumulative Unrealized Gain	[8]			573,155
Estimated Fair Value	[8]			36,742,302
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	[7]	58,107,262
Cumulative Unrealized Gain	[7]	2,217,857
Estimated Fair Value	[7]	60,325,119
Mortgage Revenue Bonds Held In Trust [Member] | Jackson Manor Apartments [Member] | MS [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		6,900,000	[7]	4,900,000	[8]
Estimated Fair Value		6,900,000	[7]	4,900,000	[8]
Mortgage Revenue Bonds Held In Trust [Member] | Gateway Village [Member] | NC [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances	[8]			2,600,000
Cumulative Unrealized Gain	[8]			90,861
Estimated Fair Value	[8]			2,690,861
Mortgage Revenue Bonds Held In Trust [Member] | Greens Property [Member] | Series A [Member] | NC [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		7,599,000	[5]	7,719,000	[6]
Cumulative Unrealized Gain		597	[5]	281,953	[6]
Estimated Fair Value		7,599,597	[5]	8,000,953	[6]
Mortgage Revenue Bonds Held In Trust [Member] | Lynnhaven Apartments [Member] | NC [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances	[8]			3,450,000
Cumulative Unrealized Gain	[8]			115,328
Estimated Fair Value	[8]			3,565,328
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		7,557,312	[3]	7,629,704	[4]
Cumulative Unrealized Gain		863,401	[3]	1,868,323	[4]
Estimated Fair Value		8,420,713	[3]	9,498,027	[4]
Mortgage Revenue Bonds Held In Trust [Member] | Village at Avalon [Member] | Series A [Member] | NM [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		15,942,560	[12]	16,069,382	[13]
Cumulative Unrealized Gain		1,727,010	[12]	4,124,498	[13]
Estimated Fair Value		17,669,570	[12]	20,193,880	[13]
Mortgage Revenue Bonds Held In Trust [Member] | Ohio Properties [Member] | Series A [Member] | OH [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances	[11]			13,580,000
Estimated Fair Value	[11]			13,580,000
Mortgage Revenue Bonds Held In Trust [Member] | Bridle Ridge [Member] | Goose Creek, SC [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances	[11]			7,145,000
Estimated Fair Value	[11]			7,145,000
Mortgage Revenue Bonds Held In Trust [Member] | Columbia Gardens [Member] | Goose Creek, SC [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		12,542,207	[1]	12,725,440	[2]
Cumulative Unrealized Gain		968,469	[1]	2,003,599	[2]
Estimated Fair Value		13,510,676	[1]	14,729,039	[2]
Mortgage Revenue Bonds Held In Trust [Member] | Companion at Thornhill Apartments [Member] | Goose Creek, SC [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		10,786,181	[1]	10,924,609	[2]
Cumulative Unrealized Gain		709,979	[1]	1,793,226	[2]
Estimated Fair Value		11,496,160	[1]	12,717,835	[2]
Mortgage Revenue Bonds Held In Trust [Member] | Cross Creek [Member] | Goose Creek, SC [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances	[11]			6,120,285
Cumulative Unrealized Gain	[11]			1,845,064
Estimated Fair Value	[11]			7,965,349
Mortgage Revenue Bonds Held In Trust [Member] | The Palms at Premier Park [Member] | Goose Creek, SC [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		18,137,042	[5]	18,385,572	[6]
Cumulative Unrealized Gain		808,555	[5]	2,181,632	[6]
Estimated Fair Value		18,945,597	[5]	20,567,204	[6]
Mortgage Revenue Bonds Held In Trust [Member] | The Park at Sondrio [Member] | Series 2022A [Member] | Goose Creek, SC [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances	[7]	38,100,000
Estimated Fair Value	[7]	38,100,000
Mortgage Revenue Bonds Held In Trust [Member] | The Park at Vietti [Member] | Series 2022A [Member] | Goose Creek, SC [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances	[7]	26,985,000
Estimated Fair Value	[7]	26,985,000
Mortgage Revenue Bonds Held In Trust [Member] | Village at River's Edge [Member] | Goose Creek, SC [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		9,649,659	[1]	9,728,355	[2]
Cumulative Unrealized Gain		590,962	[1]	2,370,569	[2]
Estimated Fair Value		10,240,621	[1]	12,098,924	[2]
Mortgage Revenue Bonds Held In Trust [Member] | Willow Run [Member] | Goose Creek, SC [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		12,368,964	[1]	12,549,146	[2]
Cumulative Unrealized Gain		953,988	[1]	1,974,479	[2]
Estimated Fair Value		13,322,952	[1]	14,523,625	[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		10,591,726	[5]	10,755,889	[6]
Cumulative Unrealized Gain		2,005,029	[5]	3,598,292	[6]
Estimated Fair Value		12,596,755	[5]	14,354,181	[6]
Mortgage Revenue Bonds Held In Trust [Member] | Avistar at Copperfield [Member] | Series A [Member] | TX [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		13,532,636	[7]	13,678,286	[8]
Cumulative Unrealized Gain		919,463	[7]	2,549,711	[8]
Estimated Fair Value		14,452,099	[7]	16,227,997	[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		8,896,378	[5]	9,022,172	[6]
Cumulative Unrealized Gain		975,504	[5]	1,926,825	[6]
Estimated Fair Value		9,871,882	[5]	10,948,997	[6]
Mortgage Revenue Bonds Held In Trust [Member] | Avistar at the Oaks [Member] | Series A [Member] | TX [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		7,196,674	[5]	7,295,334	[6]
Cumulative Unrealized Gain		717,701	[5]	1,578,333	[6]
Estimated Fair Value		7,914,375	[5]	8,873,667	[6]
Mortgage Revenue Bonds Held In Trust [Member] | Avistar at the Parkway [Member] | Series A [Member] | TX [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		12,429,842	[3]	12,579,783	[4]
Cumulative Unrealized Gain		950,930	[3]	2,353,247	[4]
Estimated Fair Value		13,380,772	[3]	14,933,030	[4]
Mortgage Revenue Bonds Held In Trust [Member] | Avistar at Wilcrest [Member] | Series A [Member] | TX [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		5,128,595	[7]	5,183,794	[8]
Cumulative Unrealized Gain		170,370	[7]	772,242	[8]
Estimated Fair Value		5,298,965	[7]	5,956,036	[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		38,941,304	[7]	39,360,426	[8]
Cumulative Unrealized Gain		2,645,832	[7]	7,200,790	[8]
Estimated Fair Value		41,587,136	[7]	46,561,216	[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		6,214,048	[5]	6,299,237	[6]
Cumulative Unrealized Gain		619,707	[5]	1,288,060	[6]
Estimated Fair Value		6,833,755	[5]	7,587,297	[6]
Mortgage Revenue Bonds Held In Trust [Member] | Avistar on the Boulevard [Member] | Series A [Member] | TX [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		15,155,942	[5]	15,370,243	[6]
Cumulative Unrealized Gain		1,290,551	[5]	3,165,575	[6]
Estimated Fair Value		16,446,493	[5]	18,535,818	[6]
Mortgage Revenue Bonds Held In Trust [Member] | Avistar on the Hills [Member] | Series A [Member] | TX [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		4,927,003	[5]	4,994,549	[6]
Cumulative Unrealized Gain		523,079	[5]	1,100,478	[6]
Estimated Fair Value		5,450,082	[5]	6,095,027	[6]
Mortgage Revenue Bonds Held In Trust [Member] | Bruton Apartments [Member] | TX [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		17,381,296	[1]	17,532,185	[2]
Cumulative Unrealized Gain		281,271	[1]	4,452,765	[2]
Estimated Fair Value		17,662,567	[1]	21,984,950	[2]
Mortgage Revenue Bonds Held In Trust [Member] | Concord at Gulfgate [Member] | Series A [Member] | TX [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		18,404,942	[1]	18,606,719	[2]
Cumulative Unrealized Gain		1,842,303	[1]	4,211,979	[2]
Estimated Fair Value		20,247,245	[1]	22,818,698	[2]
Mortgage Revenue Bonds Held In Trust [Member] | Concord at Little York [Member] | Series A [Member] | TX [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		12,893,533	[1]	13,034,887	[2]
Cumulative Unrealized Gain		1,249,523	[1]	3,055,517	[2]
Estimated Fair Value		14,143,056	[1]	16,090,404	[2]
Mortgage Revenue Bonds Held In Trust [Member] | Concord at Williamcrest [Member] | Series A [Member] | TX [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		19,973,464	[1]	20,192,436	[2]
Cumulative Unrealized Gain		1,935,645	[1]	4,651,973	[2]
Estimated Fair Value		21,909,109	[1]	24,844,409	[2]
Mortgage Revenue Bonds Held In Trust [Member] | Crossing at 1415 [Member] | Series A [Member] | TX [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		7,170,756	[1]	7,253,698	[2]
Cumulative Unrealized Gain		605,369	[1]	1,549,224	[2]
Estimated Fair Value		7,776,125	[1]	8,802,922	[2]
Mortgage Revenue Bonds Held In Trust [Member] | Decatur-Angle [Member] | TX [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		21,866,672	[1]	22,074,594	[2]
Cumulative Unrealized Gain		77,837	[1]	4,731,759	[2]
Estimated Fair Value		21,944,509	[1]	26,806,353	[2]
Mortgage Revenue Bonds Held In Trust [Member] | Esperanza at Palo Alto [Member] | TX [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		18,916,082	[1]	19,071,622	[2]
Cumulative Unrealized Gain		2,209,462	[1]	5,317,911	[2]
Estimated Fair Value		21,125,544	[1]	24,389,533	[2]
Mortgage Revenue Bonds Held In Trust [Member] | Heights at 515 [Member] | Series A [Member] | TX [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		6,564,951	[1]	6,640,885	[2]
Cumulative Unrealized Gain		573,569	[1]	1,418,341	[2]
Estimated Fair Value		7,138,520	[1]	8,059,226	[2]
Mortgage Revenue Bonds Held In Trust [Member] | Heritage Square [Member] | Series A [Member] | TX [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		10,325,196	[3]	10,455,924	[4]
Cumulative Unrealized Gain		671,790	[3]	1,823,426	[4]
Estimated Fair Value		10,996,986	[3]	12,279,350	[4]
Mortgage Revenue Bonds Held In Trust [Member] | Oaks at Georgetown [Member] | Series A [Member] | TX [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		11,911,472	[1]	12,026,225	[2]
Cumulative Unrealized Gain		746,300	[1]	2,181,690	[2]
Estimated Fair Value		12,657,772	[1]	14,207,915	[2]
Mortgage Revenue Bonds Held In Trust [Member] | Runnymede [Member] | TX [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		9,535,000	[10]	9,675,000	[11]
Cumulative Unrealized Gain		45,577	[10]	99,489	[11]
Estimated Fair Value		9,580,577	[10]	9,774,489	[11]
Mortgage Revenue Bonds Held In Trust [Member] | Southpark [Member] | TX [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		11,257,062	[10]	11,365,100	[11]
Cumulative Unrealized Gain		1,352,726	[10]	1,542,509	[11]
Estimated Fair Value		12,609,788	[10]	12,907,609	[11]
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		9,454,318	[1]	9,531,842	[2]
Cumulative Unrealized Gain		1,534,060	[1]	2,799,259	[2]
Estimated Fair Value		10,988,378	[1]	12,331,101	[2]
Mortgage Revenue Bonds Held In Trust [Member] | Rosewood Townhomes [Member] | Series A [Member] | Goose Creek, SC [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances	[8]			24,000,000
Estimated Fair Value	[8]			24,000,000
Mortgage Revenue Bonds [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		36,888,068		41,395,781
Cumulative Unrealized Gain		504,076		1,179,215
Cumulative Unrealized Loss		(1,193,085)
Estimated Fair Value		36,199,059		42,574,996
Mortgage Revenue Bonds [Member] | Lutheran Gardens [Member] | CA [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances				10,352,000
Estimated Fair Value				10,352,000
Mortgage Revenue Bonds [Member] | Live 929 Apartments [Member] | 2014 Series B [Member] | MD [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances				17,344,000
Estimated Fair Value				17,344,000
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		920,637
Cumulative Unrealized Gain		122		46,672
Estimated Fair Value		915,161		967,309
Mortgage Revenue Bonds [Member] | Ohio Properties [Member] | Series B [Member] | OH [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances				3,465,270
Estimated Fair Value				3,465,270
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		724,747		730,612
Cumulative Unrealized Gain		53,132		122,646
Estimated Fair Value		777,879		853,258
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		530,829		534,953
Cumulative Unrealized Gain		33,406		86,437
Estimated Fair Value		564,235		621,390
Mortgage Revenue Bonds [Member] | Avistar at the Parkway [Member] | Series B [Member] | TX [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		123,176		123,598
Cumulative Unrealized Gain		22,510		37,590
Estimated Fair Value		145,686		161,188
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		437,886		441,288
Cumulative Unrealized Gain		27,557		71,303
Estimated Fair Value		465,443		512,591
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		430,647		434,132
Cumulative Unrealized Gain		26,816		69,950
Estimated Fair Value		457,463		504,082
Mortgage Revenue Bonds [Member] | Meadow Valley [Member] | MI [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		4,833,437	[14]	100,000
Cumulative Unrealized Loss	[14]	(1,193,085)
Estimated Fair Value		3,640,352	[14]	100,000
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		2,631,168		2,649,291
Cumulative Unrealized Gain		297,861		744,617
Estimated Fair Value		2,929,029		3,393,908
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		3,792,700
Cumulative Unrealized Gain	[9]	42,672
Estimated Fair Value		3,835,372
Mortgage Revenue Bonds [Member] | Residency at Empire - Series BB-1 [Member] | CA [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		14,118,500
Estimated Fair Value		14,118,500
Mortgage Revenue Bonds [Member] | Residency at Empire - Series BB-2 [Member] | CA [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		4,000,000
Estimated Fair Value		4,000,000
Mortgage Revenue Bonds [Member] | Residency at Empire - Series BB-3 [Member] | CA [Member]
Schedule Of Available For Sale Securities [Line Items]
Cost Adjusted for Paydowns and Allowances		55,000
Estimated Fair Value		55,000
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		4,294,939		4,300,000
Estimated Fair Value		$ 4,294,939		$ 4,300,000

[1] MRB owned by ATAX TEBS IV, LLC (M45 TEBS), Note 15. The TEBS financing has contractual limitations on the Partnership’s ability to sell the MRB.

[2] MRB owned by ATAX TEBS IV, LLC (M45 TEBS), Note 15. The TEBS financing has contractual limitations on the Partnership’s ability to sell the MRB.

[3] MRB owned by ATAX TEBS III, LLC (M33 TEBS), Note 15. 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 15. 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 15. The TEBS financing has contractual limitations on the Partnership’s ability to sell the MRB.

[6] MRB owned by ATAX TEBS II, LLC (M31 TEBS), Note 15. The TEBS financing has contractual limitations on the Partnership’s ability to sell the MRB.

[7] MRB held by Mizuho Capital Markets, LLC in a debt financing transaction, Note 15

[8] MRB held by Mizuho Capital Markets, LLC in a debt financing transaction, Note 15

[9] As of the date presented, the MRB had been in a cumulative unrealized loss position for less than 12 consecutive months and is not considered a credit loss. The Partnership determined the unrealized loss is a result of increasing market interest rates and is not considered other-than-temporary.

[10] MRB owned by ATAX TEBS I, LLC (M24 TEBS), Note 15. The TEBS financing has contractual limitations on the Partnership’s ability to sell the MRB.

[11] MRB owned by ATAX TEBS I, LLC (M24 TEBS), Note 15. The TEBS financing has contractual limitations on the Partnership’s ability to sell the MRB.

[12] MRB held by Morgan Stanley in a debt financing transaction, Note 15

[13] MRB held by Morgan Stanley in a debt financing transaction, Note 15

[14] The Partnership has a remaining MRB funding commitment of $39.3 million as of December 31, 2022. The MRB and the unfunded MRB commitment are accounted for as available-for-sale securities and reported at fair value. The reported unrealized loss includes the unrealized loss on the current MRB carrying value (based on current fair value) as well as the unrealized loss on the Partnership’s remaining $39.3 million funding commitment outstanding as of December 31, 2022 (also based on current fair value). The Partnership determined the unrealized loss is a result of increasing market interest rates and that the cumulative unrealized loss is not other-than-temporary.