VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023
Valuation allowance for deferred tax assets
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
BEGINNING BALANCE	$ 5,621	$ 5,747	$ 22,241
ADDITIONS CHARGED TO EXPENSE	(167)	(126)	(16,494)
OTHER	0	0	0
ENDING BALANCE	5,454	5,621	5,747
Allowance for doubtful accounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
BEGINNING BALANCE	8,506	11,036	19,379
ADDITIONS CHARGED TO EXPENSE	10,030	1,229	1,570
OTHER	(7,165)	(3,759)	(9,913)
ENDING BALANCE	$ 11,371	$ 8,506	$ 11,036