OTHER COMPREHENSIVE INCOME (LOSS) - AOCI (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Sep. 30, 2022	Dec. 31, 2021	Sep. 30, 2021
Class of Stock [Line Items]
Accumulated other comprehensive income (loss)	$ 526,848	$ 477,570	$ 812,385	$ 807,158
Foreign currency translation adjustments
Class of Stock [Line Items]
Accumulated other comprehensive income (loss)	(45,233)	(57,170)
Pension and other defined benefit plans
Class of Stock [Line Items]
Accumulated other comprehensive income (loss)	(26,437)	(27,299)
Cash flow hedges
Class of Stock [Line Items]
Accumulated other comprehensive income (loss)	1,151	1,731
Accumulated other comprehensive income (loss), attributable to parent
Class of Stock [Line Items]
Accumulated other comprehensive income (loss)	$ (70,519)	$ (82,738)	$ (48,728)	$ (45,977)