SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Sep. 30, 2020 Customer Supplier	Sep. 30, 2019 Supplier Customer	Sep. 30, 2020 Customer financial_instituion Supplier	Sep. 30, 2019 Supplier Customer	Mar. 31, 2020 Customer
Concentration of Credit Risk and Other Risks and Uncertainties
Number of financial institutions | financial_instituion			2
Number of supplier more than ten percent of cost of revenue | Supplier	1	2	0	1
Number of customer more than ten percent of revenue	1	1	2	1
Number of customer more than ten percent of accounts receivable	1		1		2
Cost of revenue | Supplier Concentration Risk
Concentration of Credit Risk and Other Risks and Uncertainties
Concentration risk, percentage			10.00%
Cost of revenue | Supplier Concentration Risk | Customer One
Concentration of Credit Risk and Other Risks and Uncertainties
Concentration risk, percentage	10.30%	17.20%		15.50%
Cost of revenue | Supplier Concentration Risk | Customer Two
Concentration of Credit Risk and Other Risks and Uncertainties
Concentration risk, percentage		10.00%
Revenue | Customer Concentration Risk | Customer One
Concentration of Credit Risk and Other Risks and Uncertainties
Concentration risk, percentage	60.70%	81.10%	44.40%	79.20%
Revenue | Customer Concentration Risk | Customer Two
Concentration of Credit Risk and Other Risks and Uncertainties
Concentration risk, percentage			14.90%
Accounts Receivable | Credit Concentration Risk | Customer One
Concentration of Credit Risk and Other Risks and Uncertainties
Concentration risk, percentage			70.90%		37.30%
Accounts Receivable | Credit Concentration Risk | Customer Two
Concentration of Credit Risk and Other Risks and Uncertainties
Concentration risk, percentage					13.00%