Description Of Business (Narrative) (Details)	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2020 loan	Sep. 30, 2020 loan	Dec. 31, 2020 USD ($) portfolio_segment consumerLoans loan
Description Of Business [Abstract]
Number of Portfolio Segments | portfolio_segment			2
Number of consumers required to group advances	50	100
Number of Consumer Loans assigned to receive accelerated Dealer Holdback payment			100
Servicing fee percentage in collections			20.00%
Number Of Consumer Loans Assigned To Receive Dealer Holdback Payment | consumerLoans			100
One-time enrollment fee in program | $			$ 9,850
Percentage of enrollment fee of first accelerated dealer holdback payment			50.00%