FINANCE RECEIVABLES - Credit Risk Profile Based on Payment Activity (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jun. 30, 2019
Financing Receivable, Credit Quality Indicator [Line Items]
Total amounts to be collected	$ 20,533	$ 18,462
Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Total amounts to be collected	19,926	17,856
Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Total amounts to be collected	$ 607	$ 606