Income Taxes - Narrative (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Sep. 30, 2024
Net operating loss carryforwards
Cash and cash equivalents	$ 222,351	$ 183,123
Unrecognized tax benefits that, if recognized, would affect the annual effective income tax rate	5,000	$ 3,400
Foreign Tax Authority
Net operating loss carryforwards
Cash and cash equivalents	$ 49,600