Stock-Based Compensation - Stock Based Compensation Expense and its Classification in the Consolidated Statement of Operations (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2023	Sep. 30, 2021
Recorded as expenses:
Total stock-based compensation	$ 15,763	$ 84,850	$ 1,744
Cost of maintenance
Recorded as expenses:
Total stock-based compensation	344	1,893	0
Cost of services and other
Recorded as expenses:
Total stock-based compensation	282	1,995	0
Selling and marketing
Recorded as expenses:
Total stock-based compensation	2,850	16,202	0
Research and development
Recorded as expenses:
Total stock-based compensation	3,507	21,790	0
General and administrative
Recorded as expenses:
Total stock-based compensation	7,429	39,405	1,744
License and solutions
Recorded as expenses:
Total stock-based compensation	$ 1,351	$ 3,565	$ 0