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FAIR VALUE (Details) - USD ($)
6 Months Ended
Sep. 30, 2019
Mar. 31, 2019
Fair Value Disclosures [Abstract]    
Loans and Leases Receivable, Average Loan Period 8 months  
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Senior notes payable $ 518,831,400 $ 251,940,000
Reported Value Measurement [Member] | Senior notes payable [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Senior notes payable 518,831,400 251,940,000
Estimate of Fair Value Measurement [Member] | Senior notes payable [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Senior notes payable 518,831,400 251,940,000
Fair Value, Inputs, Level 1 [Member] | Reported Value Measurement [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and Cash Equivalents, Fair Value Disclosure 10,224,755 9,335,433
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value Measurement [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Cash and Cash Equivalents, Fair Value Disclosure 10,224,755 9,335,433
Fair Value, Inputs, Level 3 [Member] | Reported Value Measurement [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Receivables, Fair Value Disclosure 838,351,132 755,624,007
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value Measurement [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Receivables, Fair Value Disclosure $ 838,351,132 $ 755,624,007