Stockholders' Equity - Schedule of Shares of Common Stock and Preferred Stock (Details) - $ / shares shares in Thousands	Jun. 30, 2025	Sep. 30, 2024
Equity [Abstract]
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	290,000	290,000
Common stock, shares issued (in shares)	138,144	124,376
Common stock, shares outstanding (in shares)	138,144	124,376
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	5,000	5,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0