Finance Receivables - Assessment of credit quality by creditworthiness (Details 3) - Finance receivables - USD ($) $ in Thousands	Jun. 30, 2019	Jun. 30, 2018
Accounts Notes And Loans Receivable [Line Items]
Total	$ 235,409	$ 283,502
Finance receivables	235,931	287,045
Chapter 13 bankruptcy
Accounts Notes And Loans Receivable [Line Items]
Finance receivables	522	3,543
Direct Loans
Accounts Notes And Loans Receivable [Line Items]
Total	8,698	7,516
Finance receivables	8,701	7,573
Direct Loans | Chapter 13 bankruptcy
Accounts Notes And Loans Receivable [Line Items]
Finance receivables	3	57
Performing accounts
Accounts Notes And Loans Receivable [Line Items]
Total	228,321	272,559
Performing accounts | Direct Loans
Accounts Notes And Loans Receivable [Line Items]
Total	8,549	7,292
Non-performing accounts
Accounts Notes And Loans Receivable [Line Items]
Total	7,088	10,943
Non-performing accounts | Direct Loans
Accounts Notes And Loans Receivable [Line Items]
Total	149	224
Contract Portfolio
Accounts Notes And Loans Receivable [Line Items]
Total	226,711	275,986
Finance receivables	227,230	279,472
Contract Portfolio | Chapter 13 bankruptcy
Accounts Notes And Loans Receivable [Line Items]
Finance receivables	519	3,486
Contract Portfolio | Performing accounts
Accounts Notes And Loans Receivable [Line Items]
Total	219,772	265,267
Contract Portfolio | Non-performing accounts
Accounts Notes And Loans Receivable [Line Items]
Total	$ 6,939	$ 10,719