Revenue Recognition (Detail Textuals)	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Revenue Recognition And Deferred Revenue [Abstract]
Interest income accrual on finance receivables suspension condition			Accrual of interest income on finance receivables is suspended when a loan is contractually delinquent for 61 days or more, or the collateral is repossessed, whichever is earlier. The Company reverses the accrual of interest income when the loan is contractually delinquent 61 days or more.
Average dealer discount associated with new volume	7.60%	8.10%	7.90%	8.30%