Stockholder's Equity - Schedule of Stock-based Compensation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation	$ 14,710	$ 17,425	$ 42,179	$ 32,954
Cost of Connected Services
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation	165	423	937	963
Cost of Professional Services
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation	1,543	1,718	4,008	3,022
Research and Development
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation	4,774	5,001	13,377	9,924
Sales and Marketing
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation	2,774	3,223	8,351	6,589
General and Administrative
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation	$ 5,454	$ 7,060	$ 15,506	$ 12,456