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Cash Equivalents and Short-Term Investments - Schedule of Cash Equivalents and Short-term Investments (Details) - USD ($) $ in Thousands	Jul. 31, 2025	Jan. 31, 2025
Cash Equivalents:
Cash equivalents, amortized cost	$ 27,024	$ 15,297
Cash equivalents, estimated fair value	27,024	15,297
Short-Term Investments:
Amortized Cost	98,114	116,519
Gross Unrealized Gains	35	157
Gross Unrealized Losses	(37)	(41)
Estimated Fair Value	98,112	116,635
Amortized Cost	125,138	131,816
Estimated Fair Value	125,136	131,932
U.S. government treasury securities
Short-Term Investments:
Amortized Cost	74,368	82,486
Gross Unrealized Gains	32	115
Gross Unrealized Losses	(25)	(29)
Estimated Fair Value	74,375	82,572
Corporate debt securities
Short-Term Investments:
Amortized Cost	23,746	29,089
Gross Unrealized Gains	3	42
Gross Unrealized Losses	(12)	(12)
Estimated Fair Value	23,737	29,119
Commercial paper
Short-Term Investments:
Amortized Cost		4,944
Gross Unrealized Gains		0
Gross Unrealized Losses		0
Estimated Fair Value		4,944
Money market funds
Cash Equivalents:
Cash equivalents, amortized cost	27,024	15,297
Cash equivalents, estimated fair value	$ 27,024	$ 15,297

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