Fair Value Measurement (Tables)

12 Months Ended

Sep. 30, 2025

Fair Value Disclosures [Abstract]

Summary of Company's Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis

As of September 30, 2025, financial assets measured and recognized at fair value are as follows:

(in thousands)	Level 1		Level 2		Level 3		Fair value
Assets
Money market funds	$	150,372	$	—	$	—	$	150,372
U.S. government treasury bills	49,385		—		—		49,385
Total financial assets	$	199,757	$	—	$	—	$	199,757

As of September 30, 2024, financial assets measured and recognized at fair value are as follows:

(in thousands)	Level 1		Level 2		Level 3		Fair value
Assets
Money market funds	$	199,858	$	—	$	—	$	199,858
U.S. government treasury bills	50,083		—		—		50,083
Total financial assets	$	249,941	$	—	$	—	$	249,941