Segments - Summary of Partnership Reportable Segment Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Total revenues
Total revenues	$ 22,604,404	$ 17,681,901	$ 59,043,742	$ 48,475,885
Interest expense
Interest expense	8,035,982	5,663,452	18,750,079	16,248,023
Depreciation expense
Depreciation expense	688,488	680,925	2,056,512	2,049,269
Net income (loss)
Net income (loss)	18,516,593	12,988,384	62,387,292	30,245,918
Total assets
Total assets	1,450,086,995		1,450,086,995		$ 1,385,909,483
Operating Segments [Member] | Affordable Multifamily MRB Investments [Member]
Total revenues
Total revenues	18,423,127	12,795,214	45,443,505	34,624,484
Interest expense
Interest expense	7,530,723	5,186,465	17,309,510	15,166,356
Depreciation expense
Depreciation expense	5,962	5,912	17,885	17,534
Net income (loss)
Net income (loss)	6,375,471	3,453,537	16,099,041	7,293,774
Total assets
Total assets	1,388,462,019		1,388,462,019		1,304,626,248
Operating Segments [Member] | Seniors and Skilled Nursing MRB Investments [Member]
Total revenues
Total revenues	194,296		664,579
Interest expense
Interest expense	5,750		5,750
Net income (loss)
Net income (loss)	187,921		656,954
Total assets
Total assets	(903,056)		(903,056)		13,533,020
Operating Segments [Member] | Market-Rate Joint Venture Investments [Member]
Total revenues
Total revenues	2,072,781	3,074,909	7,149,916	8,556,926
Interest expense
Interest expense	226,247	193,876	619,928	234,375
Net income (loss)
Net income (loss)	12,423,255	9,836,133	46,185,380	23,546,743
Total assets
Total assets	107,181,273		107,181,273		112,052,513
Operating Segments [Member] | MF Properties [Member]
Total revenues
Total revenues	1,914,200	1,811,778	5,785,742	5,294,475
Interest expense
Interest expense	273,262	283,111	814,891	847,292
Depreciation expense
Depreciation expense	682,526	675,013	2,038,627	2,031,735
Net income (loss)
Net income (loss)	(470,054)	$ (301,286)	(554,083)	$ (594,599)
Total assets
Total assets	61,772,595		61,772,595		66,501,994
Consolidation, Eliminations [Member]
Total assets
Total assets	$ (106,425,836)		$ (106,425,836)		$ (110,804,292)