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EMPLOYEE BENEFIT PLANS - Schedule of Defined Benefit Pension Expense (Income) Included in Other Income (Expense ) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Retirement Benefits [Abstract]
Interest cost	$ 1,605	$ 1,889	$ 3,210	$ 3,777
Expected return on plan assets	(2,541)	(2,543)	(5,083)	(5,086)
Amortization:
Recognized actuarial loss	637	689	1,273	1,378
Net periodic (benefit) expense	$ (299)	$ 35	$ (600)	$ 69

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