Fair Value of Financial Instruments - Additional Information (Details) - USD ($)	1 Months Ended
	Sep. 30, 2024	Jan. 31, 2021	Jul. 31, 2025	Jan. 31, 2025
Derivative [Line Items]
Financial assets			$ 273,681,000
Financial liabilities			530,000
Level 2
Derivative [Line Items]
Financial assets			7,229,000
Financial liabilities			530,000
Level 3
Derivative [Line Items]
Financial assets			0	$ 0
Financial liabilities			0	0
0.00% Convertible Notes Due 2026 | Senior Notes
Derivative [Line Items]
Debt instrument interest rate stated percentage		0.00%
Debt instrument maturity date		Jan. 15, 2026
Aggregate principal amount		$ 345,000,000
1.50% Convertible Notes Due 2029 | Senior Notes
Derivative [Line Items]
Debt instrument interest rate stated percentage	1.50%
Debt instrument maturity date	Sep. 15, 2029
Aggregate principal amount	$ 460,000,000
2026 Convertible Notes
Derivative [Line Items]
Repurchase of aggregate principal amount	$ 140,000,000
Convertible senior notes, fair value			263,200,000	260,200,000
2029 Convertible Notes
Derivative [Line Items]
Convertible senior notes, fair value			$ 463,000,000	$ 458,100,000