FAIR VALUE (Details) - USD ($)	6 Months Ended
	Sep. 30, 2021	Mar. 31, 2021
Fair Value Disclosures [Abstract]
Average loan period	8 months
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior unsecured notes payable, net	$ 294,897,327	$ 0
Senior notes payable	275,705,753	405,007,500
Fair Value, Inputs, Level 1 | Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	16,886,215	15,746,454
Fair Value, Inputs, Level 1 | Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	16,886,215	15,746,454
Fair Value, Inputs, Level 2 | Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets held for sale	0	1,143,528
Fair Value, Inputs, Level 2 | Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Assets held for sale	0	1,143,528
Fair Value, Inputs, Level 3 | Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans receivable, net	910,149,795	733,659,389
Fair Value, Inputs, Level 3 | Carrying Value | Senior notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior unsecured notes payable, net	300,000,000	0
Senior notes payable	275,705,753	405,007,500
Fair Value, Inputs, Level 3 | Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans receivable, net	910,149,795	733,659,389
Fair Value, Inputs, Level 3 | Estimated Fair Value | Senior notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Senior unsecured notes payable, net	296,100,000	0
Senior notes payable	$ 275,705,753	$ 405,007,500