Short-Term Investments - Narrative (Details) - USD ($)	3 Months Ended	9 Months Ended
	Oct. 31, 2022	Oct. 31, 2022	Jan. 31, 2022
Investments, Debt and Equity Securities [Abstract]
Accrued interest receivable	$ 600,000	$ 600,000
Short-term investments	208,887,000	208,887,000	$ 0
Summary of Investment Holdings [Line Items]
Gross Unrealized Losses		1,389,000
Credit-related impairment losses	0	0
Ending allowance for credit losses	0	0
U.S. Treasury Securities
Investments, Debt and Equity Securities [Abstract]
Short-term investments	208,887,000	208,887,000
Summary of Investment Holdings [Line Items]
Gross Unrealized Losses	100,000	1,389,000
Gains or losses	$ 0	$ 0