CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (24,288)	$ 23,857
Other comprehensive (loss) income:
Foreign currency translation adjustments	(3,849)	4,280
Pension adjustments, net	(3)	27
Net unrealized (loss) gains on available-for-sale securities	(21)	163
Total other comprehensive (loss) income	(3,873)	4,470
Comprehensive (loss) income	$ (28,161)	$ 28,327