FINANCE RECEIVABLES AND ALLOWANCE FOR CREDIT LOSSES (Roll Forward of the Allowance for Credit Losses on Our Gross Loans Receivable) (Details) - USD ($)		3 Months Ended		9 Months Ended		12 Months Ended
	Apr. 01, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Mar. 31, 2020
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 96,487,856	$ 109,601,359	$ 101,469,313	$ 96,487,856	$ 81,519,624	$ 81,519,624
Provision for credit losses		28,857,443	55,219,470	80,608,470	149,478,577
Charge-offs		(29,239,780)	(46,850,430)	(106,865,225)	(128,978,851)
Recoveries		4,248,339	3,231,288	14,607,892	11,050,291
Net charge-offs		(24,991,441)	(43,619,142)	(92,257,333)	(117,928,560)
Ending Balance		$ 113,467,361	$ 113,069,641	$ 113,467,361	$ 113,069,641	$ 96,487,856
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201613Member			us-gaap:AccountingStandardsUpdate201613Member		us-gaap:AccountingStandardsUpdate201605Member
Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 28,628,368			$ 28,628,368
Ending Balance						$ 28,628,368