Goodwill and Intangible Assets - Schedule of Aggregate Amortization Expense for Intangible Assets with Finite Lives (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of acquired intangible assets	$ 10,670	$ 8,931	$ 29,352	$ 25,865
Cost of revenue	9,841	6,596	25,817	19,010
Total amortization expense	$ 20,511	$ 15,527	$ 55,169	$ 44,875