Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Unearned Revenue (Details)
Total Revenue	$ 103,517	$ 79,079	$ 282,487	$ 229,526
North America, primarily the United States
Unearned Revenue (Details)
Total Revenue	83,282	56,965	223,315	167,406
Europe, Middle East & Africa
Unearned Revenue (Details)
Total Revenue	12,265	12,543	37,139	34,769
Rest of world
Unearned Revenue (Details)
Total Revenue	7,970	9,571	22,033	27,351
Transferred at a point in time
Unearned Revenue (Details)
Total Revenue	80,858	70,333	220,049	203,665
Transferred over time
Unearned Revenue (Details)
Total Revenue	$ 22,659	$ 8,746	$ 62,438	$ 25,861