INVESTMENTS IN OPERATING PARTNERSHIPS - Dispositions by Series (Details) - USD ($)	6 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Dispositions By Series [Line Items]
Operating Partnership Interest Transferred	3	4
Sale of Underlying Operating Partnership	0	0
Fund Proceeds from Disposition	$ 47,500	$ 841,020
Gain on Disposition	$ 47,500	$ 841,020
Series 15
Dispositions By Series [Line Items]
Operating Partnership Interest Transferred	0	1
Sale of Underlying Operating Partnership	0	0
Fund Proceeds from Disposition	$ 0	$ 12,500
Gain on Disposition	$ 0	$ 12,500
Series 16
Dispositions By Series [Line Items]
Operating Partnership Interest Transferred	3	0
Sale of Underlying Operating Partnership	0	0
Fund Proceeds from Disposition	$ 47,500	$ 0
Gain on Disposition	$ 47,500	$ 0
Series 17
Dispositions By Series [Line Items]
Operating Partnership Interest Transferred	0	0
Sale of Underlying Operating Partnership	0	0
Fund Proceeds from Disposition	$ 0	$ 0
Gain on Disposition	$ 0	$ 0
Series 18
Dispositions By Series [Line Items]
Operating Partnership Interest Transferred	0	1
Sale of Underlying Operating Partnership	0	0
Fund Proceeds from Disposition	$ 0	$ 815,520
Gain on Disposition	$ 0	$ 815,520
Series 19
Dispositions By Series [Line Items]
Operating Partnership Interest Transferred	0	2
Sale of Underlying Operating Partnership	0	0
Fund Proceeds from Disposition	$ 0	$ 13,000
Gain on Disposition	$ 0	$ 13,000