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Revenue Recognition (Detail Textuals)	3 Months Ended		6 Months Ended
Revenue Recognition (Detail Textuals)	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Deferred Revenue Disclosure [Abstract]
Interest income accrual on finance receivables suspension condition			Accrual of interest income on finance receivables is suspended when a loan enters bankruptcy status, is contractually delinquent for 60 days or more or the collateral is repossessed, whichever is earlier. Chapter 13 bankruptcy accounts are accounted for under the cost-recovery method.
Average dealer discount associated with new volume	7.01%	7.57%	7.08%	7.55%