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ALLOWANCE FOR LOAN LOSSES (Assessment of Credit Quality) (Details) - USD ($)
9 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Mar. 31, 2019
Financing Receivable, Recorded Investment [Line Items]      
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment $ 56,700,000 $ 46,300,000  
Gross loan balance 1,372,768,580 1,258,907,905 $ 1,127,957,383
Consumer loans- non-bankrupt accounts [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Gross loan balance 1,366,079,543 1,252,645,902 1,121,895,834
Consumer loans- bankrupt accounts [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Gross loan balance 6,689,037 6,262,003 6,061,549
Performing Financing Receivable [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Gross loan balance 1,255,471,072 1,164,459,600 1,039,774,448
Nonperforming Financial Instruments [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest 117,297,508 94,448,305 88,182,935
New borrower [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Gross loan balance 155,284,022 175,727,060  
New borrower [Member] | New borrower [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Gross loan balance     138,140,479
Former borrower [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Gross loan balance 161,575,535 144,840,392  
Former borrower [Member] | Former borrower [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Gross loan balance     116,242,182
Refinance [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Gross loan balance 1,031,380,059 917,868,854  
Refinance [Member] | Refinance [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Gross loan balance     854,880,194
Delinquent refinance [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Gross loan balance $ 24,528,964 $ 20,471,599  
Delinquent refinance [Member] | Delinquent refinance [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Gross loan balance     $ 18,694,528