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Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Total revenues	$ 430,221	$ 424,046	$ 444,849
North America, primarily United States
Disaggregation of Revenue [Line Items]
Total revenues	341,904	302,491	323,714
Europe, Middle East & Africa
Disaggregation of Revenue [Line Items]
Total revenues	62,887	64,890	69,980
Rest of world
Disaggregation of Revenue [Line Items]
Total revenues	25,430	56,665	51,155
Transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenues	303,470	313,421	345,119
Transferred over time
Disaggregation of Revenue [Line Items]
Total revenues	$ 126,751	$ 110,625	$ 99,730

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