RELATED PARTY TRANSACTIONS - Fund management fees accrued (Details) - USD ($)	6 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Related Party Transaction [Line Items]
Gross Fund Management Fee	$ 368,371	$ 478,473
Series Twenty [Member]
Related Party Transaction [Line Items]
Gross Fund Management Fee		2,549
Series Twenty Two [Member]
Related Party Transaction [Line Items]
Gross Fund Management Fee		6,426
Series Twenty Three [Member]
Related Party Transaction [Line Items]
Gross Fund Management Fee		5,556
Series Twenty Four [Member]
Related Party Transaction [Line Items]
Gross Fund Management Fee	10,299	10,761
Series Twenty Six [Member]
Related Party Transaction [Line Items]
Gross Fund Management Fee	13,938	13,938
Series Twenty Seven [Member]
Related Party Transaction [Line Items]
Gross Fund Management Fee	7,635	7,635
Series Twenty Eight [Member]
Related Party Transaction [Line Items]
Gross Fund Management Fee	7,296	7,296
Series Twenty Nine [Member]
Related Party Transaction [Line Items]
Gross Fund Management Fee	7,260	7,261
Series Thirty [Member]
Related Party Transaction [Line Items]
Gross Fund Management Fee		7,462
Series Thirty One [Member]
Related Party Transaction [Line Items]
Gross Fund Management Fee		16,535
Series Thirty Two [Member]
Related Party Transaction [Line Items]
Gross Fund Management Fee	19,794	19,794
Series Thirty Three [Member]
Related Party Transaction [Line Items]
Gross Fund Management Fee	13,316	13,318
Series Thirty Four [Member]
Related Party Transaction [Line Items]
Gross Fund Management Fee	11,496	12,366
Series Thirty Five [Member]
Related Party Transaction [Line Items]
Gross Fund Management Fee	9,847	10,653
Series Thirty Six [Member]
Related Party Transaction [Line Items]
Gross Fund Management Fee	2,739	5,990
Series Thirty Seven [Member]
Related Party Transaction [Line Items]
Gross Fund Management Fee		3,396
Series Thirty Eight [Member]
Related Party Transaction [Line Items]
Gross Fund Management Fee	2,742	16,581
Series Forty [Member]
Related Party Transaction [Line Items]
Gross Fund Management Fee	19,612	26,594
Series Forty One [Member]
Related Party Transaction [Line Items]
Gross Fund Management Fee	34,077	34,076
Series Forty Two [Member]
Related Party Transaction [Line Items]
Gross Fund Management Fee	23,790	27,505
Series Forty Three [Member]
Related Party Transaction [Line Items]
Gross Fund Management Fee	24,400	45,091
Series Forty Four [Member]
Related Party Transaction [Line Items]
Gross Fund Management Fee	48,187	57,826
Series Forty Five [Member]
Related Party Transaction [Line Items]
Gross Fund Management Fee	59,644	67,565
Series Forty Six [Member]
Related Party Transaction [Line Items]
Gross Fund Management Fee	$ 52,299	$ 52,299