ACCOUNTING POLICIES - Rollforward Of Allowance For Doubtful Accounts (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019
Accounts receivable
Beginning balance	$ 7,313	$ 7,676
Provision for expected losses	542	394
Ending balance	7,855	7,313
Finance receivable
Beginning balance	559	150	$ 607	$ 606
Provision for expected losses	350	0	0	1
Ending balance	$ 909	559	$ 602	$ 607
Impact of adoption of ASC 326
Accounts receivable
Beginning balance		(757)
Finance receivable
Beginning balance		$ 409