FINANCE RECEIVABLES - Credit Risk Profile Based on Payment Activity (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Jun. 30, 2018
Financing Receivable, Credit Quality Indicator [Line Items]
Total finance receivables, gross	$ 17,918	$ 17,861
Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Total finance receivables, gross	17,911	17,849
Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Total finance receivables, gross	$ 7	$ 12