Segments - Summary of Partnership Reportable Segment Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Total revenues
Total revenues	$ 17,232,967	$ 16,406,496	$ 36,439,338	$ 30,793,984
Interest expense
Interest expense	6,776,966	5,358,096	10,714,097	10,584,571
Depreciation expense
Depreciation expense	684,362	684,884	1,368,024	1,368,344
Net income (loss)
Net income (loss)	17,606,681	10,264,680	43,870,699	17,257,534
Total assets
Total assets	1,441,846,671		1,441,846,671		$ 1,385,909,483
Operating Segments [Member] | Affordable Multifamily MRB Investments [Member]
Total revenues
Total revenues	12,886,972	11,034,482	27,020,378	21,829,270
Interest expense
Interest expense	6,306,743	5,035,615	9,778,787	9,979,892
Depreciation expense
Depreciation expense	5,961	5,811	11,923	11,622
Net income (loss)
Net income (loss)	2,758,015	1,290,784	9,723,570	3,840,236
Total assets
Total assets	1,367,407,963		1,367,407,963		1,304,626,248
Operating Segments [Member] | Seniors and Skilled Nursing MRB Investments [Member]
Total revenues
Total revenues	240,905		470,283
Net income (loss)
Net income (loss)	240,280		469,033
Total assets
Total assets	11,988,159		11,988,159		13,533,020
Operating Segments [Member] | Market-Rate Joint Venture Investments [Member]
Total revenues
Total revenues	2,160,549	3,583,841	5,077,135	5,482,017
Interest expense
Interest expense	201,357	40,498	393,681	40,498
Net income (loss)
Net income (loss)	14,600,082	9,004,390	33,762,125	13,710,611
Total assets
Total assets	111,975,995		111,975,995		112,052,513
Operating Segments [Member] | MF Properties [Member]
Total revenues
Total revenues	1,944,541	1,788,173	3,871,542	3,482,697
Interest expense
Interest expense	268,866	281,983	541,629	564,181
Depreciation expense
Depreciation expense	678,401	679,073	1,356,101	1,356,722
Net income (loss)
Net income (loss)	(8,304)	$ (30,494)	(84,029)	$ (293,313)
Total assets
Total assets	61,436,062		61,436,062		66,501,994
Consolidation, Eliminations [Member]
Total assets
Total assets	$ (110,961,508)		$ (110,961,508)		$ (110,804,292)