OTHER INCOME (EXPENSE) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Other Income and Expenses [Abstract]
Other income (expense)	$ 293	$ 1,369	$ 900	$ 2,444
Foreign currency transaction gain (loss), before tax	(164)	(168)	(98)	(562)
Net periodic benefit income (expense)	(217)	1,079	(433)	2,027
Investment income, net	73	(203)	107	171
Rental income	0	156	212	212
Royalty income	$ 476	$ 616	$ 1,025	$ 616