FINANCE RECEIVABLES AND ALLOWANCE FOR CREDIT LOSSES (Assessment of Credit Quality) (Details) - USD ($)	9 Months Ended
	Dec. 31, 2019	Dec. 31, 2020	Mar. 31, 2020
Financing Receivable, Recorded Investment [Line Items]
Impaired loans	$ 56,700,000
Gross loans receivable	$ 1,372,768,580	$ 1,264,530,315	$ 1,209,871,366
Contractual basis
Financing Receivable, Recorded Investment [Line Items]
Gross loans receivable		$ 1,264,530,315
Financing receivable, percent past due	12.60%	10.40%	12.80%
Recency Basis
Financing Receivable, Recorded Investment [Line Items]
Gross loans receivable		$ 1,264,530,315
Financing receivable, percent past due	10.90%	8.90%	10.50%
30 - 60 days past due | Contractual basis
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, past due	$ 55,172,208	$ 48,969,245	$ 49,137,102
Financing receivable, percent past due		3.90%
30 - 60 days past due | Recency Basis
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, past due	54,090,162	$ 46,669,394	48,206,910
Financing receivable, percent past due		3.70%
61 - 90 days past due | Contractual basis
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, past due	36,531,939	$ 29,487,124	35,020,925
Financing receivable, percent past due		2.30%
61 - 90 days past due | Recency Basis
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, past due	33,295,364	$ 26,776,302	28,450,942
Financing receivable, percent past due		2.10%
91 or more days past due | Contractual basis
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, past due	80,765,569	$ 53,458,007	70,719,727
Financing receivable, percent past due		4.20%
91 or more days past due | Recency Basis
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, past due	62,565,314	$ 38,608,276	50,669,837
Financing receivable, percent past due		3.10%
Total Past Due | Contractual basis
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, past due	172,469,716	$ 131,914,376	154,877,754
Total Past Due | Recency Basis
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, past due	149,950,840	$ 112,053,972	127,327,689
New borrower
Financing Receivable, Recorded Investment [Line Items]
Gross loans receivable	155,284,022		124,800,193
Former borrower
Financing Receivable, Recorded Investment [Line Items]
Gross loans receivable	161,575,535		127,108,125
Refinance
Financing Receivable, Recorded Investment [Line Items]
Gross loans receivable	1,031,380,059		935,448,882
Delinquent refinance
Financing Receivable, Recorded Investment [Line Items]
Gross loans receivable	24,528,964		22,514,166
Performing Financing Receivable
Financing Receivable, Recorded Investment [Line Items]
Gross loans receivable	1,255,471,072		1,104,130,714
Nonperforming Financial Instruments
Financing Receivable, Recorded Investment [Line Items]
Gross loans receivable	117,297,508		105,740,652
Consumer loans- non-bankrupt accounts
Financing Receivable, Recorded Investment [Line Items]
Gross loans receivable	1,366,079,543		1,203,552,152
Consumer loans- bankrupt accounts
Financing Receivable, Recorded Investment [Line Items]
Gross loans receivable	$ 6,689,037		$ 6,319,214