OTHER COMPREHENSIVE INCOME (LOSS) - AOCI (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021
Class of Stock [Line Items]
Accumulated other comprehensive income (loss)	$ 468,311	$ 526,848	$ 477,570	$ 883,214	$ 812,385	$ 807,158
Foreign currency translation adjustments
Class of Stock [Line Items]
Accumulated other comprehensive income (loss)	(44,899)		(57,170)
Pension and other defined benefit plans
Class of Stock [Line Items]
Accumulated other comprehensive income (loss)	(25,691)		(27,299)
Cash flow hedges
Class of Stock [Line Items]
Accumulated other comprehensive income (loss)	2,684		1,731
Accumulated other comprehensive income (loss), attributable to parent
Class of Stock [Line Items]
Accumulated other comprehensive income (loss)	$ (67,906)	$ (70,519)	$ (82,738)	$ (43,779)	$ (48,728)	$ (45,977)