Stockholders' Equity - Schedule of Stock-based Compensation (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation	$ 40,766	$ 28,076	$ 60,555
Cost of Connected Services
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation	445	499	865
Cost of Professional Services
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation	3,258	3,267	4,895
Research and Development
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation	17,167	10,196	16,538
Sales and Marketing
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation	3,454	3,569	12,533
General and Administrative
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation	$ 16,442	6,545	$ 25,724
Restructuring and Other Costs, Net
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation		$ 4,000