FINANCE RECEIVABLES - Schedule of Credit Loss (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Jun. 30, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	$ 150
Ending balance	$ 559		$ 150
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201613Member		us-gaap:AccountingStandardsUpdate201613Member
Nonperforming
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	$ 150	$ 606	$ 606
Provision for credit losses	0	1
Charge-offs	0	0
Ending balance	559	$ 607	150
Cumulative Effect, Period of Adoption, Adjustment | Nonperforming
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	$ 409
Ending balance			$ 409