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ALLOWANCE FOR LOAN LOSSES (Summary of Past Due Receivables) (Details) - USD ($)
Dec. 31, 2018
Sep. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Mar. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]            
Loans and Leases Receivable, Allowance $ (91,305,834) $ (79,310,375) $ (66,088,139) $ (81,320,491) $ (71,172,677) $ (60,644,365)
Financing Receivable, Bankruptcy 4,714,475   $ 4,627,599 4,507,307    
Financing Receivable, Recorded Investment, Past Due $ 144,103,594          
Financing Receivable, Percent Past Due 11.40%   10.70%      
Financing Receivables, Delinquent, excluding bankruptcy $ 62,834,979   $ 50,019,567 57,019,347    
Financing Receivables Less Than Ninety One Days Delinquent Excluding Bankruptcy 1,191,358,451   949,585,993 1,065,892,727    
Loans and Leases Receivable, Gross 1,258,907,905   1,004,233,159 1,127,419,381    
Financing Receivable Individually Evaluated for Impairment Unearned Interest and Fees 338,132,479   258,991,492 300,196,411    
Loans and Leases Receivable, Net of Deferred Income 920,775,426   745,241,667 827,222,970    
Loans and Leases Receivable, Net Amount 829,469,592   679,153,528 745,902,479    
Financing Receivables, 30 to 59 Days Past Due [Member]            
Financing Receivable, Recorded Investment, Past Due [Line Items]            
Financing Receivable, Recorded Investment, Past Due 49,655,289   32,959,151      
Financing Receivables, 60 to 89 Days Past Due [Member]            
Financing Receivable, Recorded Investment, Past Due [Line Items]            
Financing Receivable, Recorded Investment, Past Due 31,613,326   24,812,730 25,709,901    
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]            
Financing Receivable, Recorded Investment, Past Due [Line Items]            
Financing Receivable, Recorded Investment, Past Due $ 62,834,979   50,019,567 57,019,347    
Contractual basis [Member]            
Financing Receivable, Recorded Investment, Past Due [Line Items]            
Financing Receivable, Recorded Investment, Past Due     $ 107,791,448 $ 122,684,780    
Financing Receivable, Percent Past Due       10.90%    
Contractual basis [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]            
Financing Receivable, Recorded Investment, Past Due [Line Items]            
Financing Receivable, Recorded Investment, Past Due       $ 39,955,532