Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Statement Of Income And Comprehensive Income [Abstract]
Net loss	$ (7,733)	$ (4,083)	$ (15,576)	$ (6,895)
Derivative instruments:
Unrealized net loss	(304)		(748)
Net (gain) loss reclassified to earnings	(11)		20
Net changes related to available-for-sale securities, net of tax		(6)		(11)
Foreign currency translation adjustments	1,118	(1,503)	6,788	(3,150)
Other comprehensive income (loss)	803	(1,509)	6,060	(3,161)
Comprehensive loss	$ (6,930)	$ (5,592)	$ (9,516)	$ (10,056)