Contract Balance - Deferred Revenues (Details) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2023	Sep. 30, 2022
Revenue from Contract with Customer [Abstract]
Contract with Customer, Liability	$ 134,113	$ 126,560
Revenue recognized that was included in the deferred revenues balance at the beginning of the period	(104,904)
Increases due to billings, excluding amounts recognized as revenue during the period	112,457
Deferred revenue, current portion	127,300	120,000
Deferred revenue, noncurrent	$ 6,800	$ 6,600