OTHER INCOME (EXPENSE) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Other Income and Expenses [Abstract]
Other income (expense)	$ 1,475	$ 2,084	$ 2,375	$ 4,528
Foreign currency transaction gain (loss), before tax	590	265	492	(297)
Net periodic benefit income (expense)	(217)	1,118	(650)	3,145
Investment income, net	336	(91)	444	(328)
Rental income	0	156	212	468
Royalty income	$ 438	$ 828	$ 1,463	$ 1,444