Stockholders' Equity - Schedule of Stock-based Compensation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation	$ 6,253	$ 14,710	$ 23,020	$ 42,179
Cost of Connected Services
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation	97	165	440	937
Cost of Professional Services
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation	625	1,543	2,944	4,008
Research and Development
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation	2,531	4,774	8,672	13,377
Sales and Marketing
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation	1,239	2,774	2,083	8,351
General and Administrative
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation	$ 1,761	$ 5,454	4,881	$ 15,506
Restructuring and Other Costs, Net
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation			$ 4,000