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ALLOWANCE FOR LOAN LOSSES (Assessment of Credit Quality) (Details) - USD ($)
3 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Mar. 31, 2019
Financing Receivable, Recorded Investment [Line Items]      
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment $ 51,100,000 $ 42,700,000  
Gross loan balance 1,222,696,245 1,062,673,177 $ 1,127,957,383
Consumer loans- non-bankrupt accounts [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Gross loan balance 1,216,089,192 1,057,020,248 1,121,895,834
Consumer loans- bankrupt accounts [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Gross loan balance 6,607,053 5,652,929 6,061,549
Performing Financing Receivable [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Gross loan balance 1,133,978,402 992,218,267 1,039,774,448
Nonperforming Financial Instruments [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest 88,717,843 70,454,910 88,182,935
New borrower [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Gross loan balance 147,365,635 103,601,323  
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 133,566,583 121,695,512  
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 920,783,881 819,375,003  
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 $ 20,980,146 $ 18,001,339  
Delinquent refinance [Member] | Delinquent refinance [Member]      
Financing Receivable, Recorded Investment [Line Items]      
Gross loan balance     $ 18,694,528