Property and Equipment Net - Components of Property and Equipment, Net by Geography (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Sep. 30, 2022
Property Plant And Equipment [Line Items]
Total long-lived assets	$ 34,013	$ 37,707
United States
Property Plant And Equipment [Line Items]
Total long-lived assets	26,117	28,779
Germany
Property Plant And Equipment [Line Items]
Total long-lived assets	1,861	1,866
Canada
Property Plant And Equipment [Line Items]
Total long-lived assets	1,695	2,252
Other countries
Property Plant And Equipment [Line Items]
Total long-lived assets	$ 4,340	$ 4,810