Finance Receivables (Detail Textuals 1) - USD ($) $ in Thousands		3 Months Ended
	Feb. 28, 2019	Jun. 30, 2019	Jun. 30, 2018
Accounts Notes And Loans Receivable [Line Items]
Maximum criteria for receivable to be a performing account		61 days
Percentage of more than payment contractually for delinquent		10.00%
Minimum criteria for receivable to be a non-performing account		60 days
Troubled debt restructuring allowance for credit losses		$ 212,000	$ 774,000
Maximum
Accounts Notes And Loans Receivable [Line Items]
Criteria for receivable to be delinquent account	181 days
Minimum
Accounts Notes And Loans Receivable [Line Items]
Criteria for receivable to be delinquent account	121 days