Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ (1,536)	$ (27,274)	$ 4,237
Derivative instruments:
Unrealized net gain	260
Net gain reclassified to earnings	(77)
Net changes related to available-for-sale securities, net of tax	(6)	(1)	1
Foreign currency translation adjustments	4,938	(11,600)	(1,448)
Other comprehensive income (loss)	5,115	(11,601)	(1,447)
Comprehensive income (loss)	$ 3,579	$ (38,875)	$ 2,790