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Stockholders' Equity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
	Oct. 02, 2019	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Sep. 30, 2025	Nov. 29, 2024	Oct. 06, 2024	Mar. 04, 2024
Class Of Stock [Line Items]
Common stock reserved for issuance	6,350,000
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01		$ 0.01		$ 0.01
Increase in shares available for issuance expressed as percentage of number of shares of common stock outstanding	3.00%
Stock-based compensation		$ 7,516	$ 6,345	$ 19,616	$ 20,047
Due To Termination Of Former Ceo
Class Of Stock [Line Items]
Stock-based compensation					2,600
Due to Termination of Former Senior Management Employee
Class Of Stock [Line Items]
Stock-based compensation					400
Restricted stock unit awards
Class Of Stock [Line Items]
Stock-based compensation		$ 1,700	$ 800	$ 3,800	$ 3,200
2019 Equity Incentive Plan
Class Of Stock [Line Items]
Common stock reserved for issuance	5,300,000
2019 Employee Stock Purchase Plan
Class Of Stock [Line Items]
Common stock reserved for issuance	1,050,000
2024 Inducement Plan
Class Of Stock [Line Items]
Common stock reserved for issuance							4,500,000	3,000,000	600,000