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Cash Equivalents and Short-Term Investments - Summary of Cash Equivalents and Short-term Investments (Details) - USD ($) $ in Thousands	Jul. 31, 2023	Jan. 31, 2023
Schedule Of Cash Cash Equivalents And Short Term Investments
Cash equivalents, amortized cost	$ 12,667	$ 30,361
Cash equivalents, estimate fair value	12,667	30,361
Short-Term Investments
Amortized Cost	124,662	128,663
Gross Unrealized Gains	1	4
Gross Unrealized Losses	(302)	(811)
Estimated Fair Value	124,361	127,856
Amortized Cost	137,329	159,024
Estimated Fair Value	137,028	158,217
U.S. government treasury securities
Short-Term Investments
Amortized Cost	96,024	71,981
Gross Unrealized Gains	1	1
Gross Unrealized Losses	(245)	(729)
Estimated Fair Value	95,780	71,253
U.S. government agency securities
Short-Term Investments
Amortized Cost	11,928	7,839
Gross Unrealized Gains	0	3
Gross Unrealized Losses	(46)	(1)
Estimated Fair Value	11,882	7,841
Commercial paper
Short-Term Investments
Amortized Cost	9,941	31,500
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Estimated Fair Value	9,941	31,500
Corporate debt securities
Short-Term Investments
Amortized Cost	3,957	11,952
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(4)	(50)
Estimated Fair Value	3,953	11,902
Asset-backed securities
Short-Term Investments
Amortized Cost	2,812	5,391
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(7)	(31)
Estimated Fair Value	2,805	5,360
Money market funds
Schedule Of Cash Cash Equivalents And Short Term Investments
Cash equivalents, amortized cost	12,667	29,239
Cash equivalents, estimate fair value	$ 12,667	29,239
Corporate debt securities
Schedule Of Cash Cash Equivalents And Short Term Investments
Cash equivalents, amortized cost		1,122
Cash equivalents, estimate fair value		$ 1,122

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