FINANCE RECEIVABLES - Schedule of Credit Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance	$ 559	$ 150	$ 607	$ 606
Provision for expected losses	350	0	0	1
Write-offs	0		(5)
Ending balance	$ 909	559	$ 602	$ 607
Impact of adoption of ASC 326
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning balance		$ 409