ACCOUNTING PRONOUNCEMENTS - Accounts Receivable, Allowance for Credit Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss, beginning balance	$ 10,654	$ 9,618
Charged to Expense	1,368	2,182
Deductions	(1,884)	(1,146)
Allowance for credit loss, ending balance	$ 10,138	$ 10,654