Stockholders' Equity (Details) - USD ($)	Jan. 02, 2024	Dec. 02, 2022	Jun. 30, 2024	Sep. 30, 2023
Class Of Stock [Line Items]
Common stock, par value (in dollars per share)			$ 0.001	$ 0.001
Common stock, shares authorized (in shares)			290,000,000	290,000,000
Common stock, shares issued (in shares)			124,227,000	107,312,000
Common stock, shares outstanding (in shares)			124,227,000	107,312,000
Preferred stock, par value (in dollars per share)			$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)			5,000,000	5,000,000
Preferred stock, shares issued (in shares)			0	0
Preferred stock, shares outstanding (in shares)			0	0
Common stock, share reserve for issuance (in shares)			4,565,727
Underwriting Agreement
Class Of Stock [Line Items]
Shares of common stock issued (in shares)	15,790,000
Common stock offering price (in dollars per share)	$ 28.50
Aggregate purchase price paid by investors	$ 450,000,000
Net proceeds	$ 429,300,000
At The Market Agreement
Class Of Stock [Line Items]
Shares issued			0
At The Market Agreement | Maximum
Class Of Stock [Line Items]
Common stock shares value reserved for future issuance		$ 250,000,000
Percentage of commission to sales agent		3.00%
2013 and 2021 Incentive Plans and other inducement grants
Class Of Stock [Line Items]
Common stock, share reserve for issuance (in shares)			11,608,148	12,709,837