INVESTMENTS IN OPERATING PARTNERSHIPS - Dispositions by series (Details)	6 Months Ended
	Sep. 30, 2020 USD ($) item	Sep. 30, 2019 USD ($) item
Dispositions By Series Disclosure
Operating Partnership Interest Transferred | item	12	6
Sale of Underlying Operating Partnership | item	1	9
Fund Proceeds from Disposition | $	$ 430,992	$ 11,850,561
Gain on Disposition | $	430,992	$ 11,850,663
Series Twenty Seven [Member]
Dispositions By Series Disclosure
Operating Partnership Interest Transferred | item		0
Sale of Underlying Operating Partnership | item		1
Fund Proceeds from Disposition | $	0	$ 776,922
Gain on Disposition | $		$ 776,922
Series Twenty Eight [Member]
Dispositions By Series Disclosure
Operating Partnership Interest Transferred | item		1
Sale of Underlying Operating Partnership | item		0
Fund Proceeds from Disposition | $	$ 0	$ 7,100
Gain on Disposition | $		7,100
Series Twenty Nine [Member]
Dispositions By Series Disclosure
Operating Partnership Interest Transferred | item	1
Sale of Underlying Operating Partnership | item	0
Fund Proceeds from Disposition | $	$ 9,500	$ 0
Gain on Disposition | $	9,500
Series Thirty One [Member]
Dispositions By Series Disclosure
Operating Partnership Interest Transferred | item		0
Sale of Underlying Operating Partnership | item		1
Fund Proceeds from Disposition | $	0	$ 618,900
Gain on Disposition | $		$ 618,900
Series Thirty Three [Member]
Dispositions By Series Disclosure
Operating Partnership Interest Transferred | item		0
Sale of Underlying Operating Partnership | item		1
Fund Proceeds from Disposition | $	0	$ 1,442,632
Gain on Disposition | $		$ 1,442,632
Series Thirty Four [Member]
Dispositions By Series Disclosure
Operating Partnership Interest Transferred | item		1
Sale of Underlying Operating Partnership | item		0
Fund Proceeds from Disposition | $	0	$ 257,500
Gain on Disposition | $		$ 257,500
Series Thirty Five [Member]
Dispositions By Series Disclosure
Operating Partnership Interest Transferred | item		1
Sale of Underlying Operating Partnership | item		0
Fund Proceeds from Disposition | $	0	$ 141,000
Gain on Disposition | $		$ 141,000
Series Thirty Six [Member]
Dispositions By Series Disclosure
Operating Partnership Interest Transferred | item		0
Sale of Underlying Operating Partnership | item		1
Fund Proceeds from Disposition | $	0	$ 476,325
Gain on Disposition | $		$ 476,325
Series Thirty Eight [Member]
Dispositions By Series Disclosure
Operating Partnership Interest Transferred | item		1
Sale of Underlying Operating Partnership | item		1
Fund Proceeds from Disposition | $	0	$ 1,463,974
Gain on Disposition | $		$ 1,463,974
Series Forty [Member]
Dispositions By Series Disclosure
Operating Partnership Interest Transferred | item		1
Sale of Underlying Operating Partnership | item		1
Fund Proceeds from Disposition | $	$ 0	$ 2,553,903
Gain on Disposition | $		2,554,005
Series Forty One [Member]
Dispositions By Series Disclosure
Operating Partnership Interest Transferred | item	1
Sale of Underlying Operating Partnership | item	0
Fund Proceeds from Disposition | $	$ 46,500	$ 0
Gain on Disposition | $	$ 46,500
Series Forty Three [Member]
Dispositions By Series Disclosure
Operating Partnership Interest Transferred | item	8	1
Sale of Underlying Operating Partnership | item	0	1
Fund Proceeds from Disposition | $	$ 106,800	$ 1,255,582
Gain on Disposition | $	106,800	$ 1,255,582
Series Forty Four [Member]
Dispositions By Series Disclosure
Operating Partnership Interest Transferred | item		0
Sale of Underlying Operating Partnership | item		2
Fund Proceeds from Disposition | $	$ 0	$ 2,856,723
Gain on Disposition | $		2,856,723
Series Forty Five [Member]
Dispositions By Series Disclosure
Operating Partnership Interest Transferred | item	1
Sale of Underlying Operating Partnership | item	1
Fund Proceeds from Disposition | $	$ 199,692	0
Gain on Disposition | $	$ 199,692
Series Forty Six [Member]
Dispositions By Series Disclosure
Operating Partnership Interest Transferred | item	1
Sale of Underlying Operating Partnership | item	0
Fund Proceeds from Disposition | $	$ 68,500	$ 0
Gain on Disposition | $	$ 68,500