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Fair Value Measurements - Schedule of Fair Value Hierarchy For Company's Assets Measured at Fair Value on Recurring Basis (Details) - USD ($)
$ in Thousands
Apr. 30, 2024
Jan. 31, 2024
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis    
Total cash equivalents $ 37,117 $ 32,895
Total short-term investments 108,220 112,281
U.S. government treasury securities    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis    
Total short-term investments 83,567 85,576
Corporate debt securities    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis    
Total short-term investments 13,757 13,725
U.S. government agency securities    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis    
Total short-term investments 5,987 7,991
Commercial paper    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis    
Total short-term investments 4,909 4,845
Asset-backed securities    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis    
Total short-term investments   144
Money market funds    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis    
Total cash equivalents 37,117 32,895
Fair Value, Recurring    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis    
Total cash equivalents 37,117 32,895
Total short-term investments 108,220 112,281
Total 145,337 145,176
Fair Value, Recurring | U.S. government treasury securities    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis    
Total short-term investments 83,567 85,576
Fair Value, Recurring | Corporate debt securities    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis    
Total short-term investments 13,757 13,725
Fair Value, Recurring | U.S. government agency securities    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis    
Total short-term investments 5,987 7,991
Fair Value, Recurring | Commercial paper    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis    
Total short-term investments 4,909 4,845
Fair Value, Recurring | Asset-backed securities    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis    
Total short-term investments   144
Fair Value, Recurring | Money market funds    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis    
Total cash equivalents 37,117 32,895
Fair Value, Recurring | Level 1    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis    
Total cash equivalents 37,117 32,895
Total short-term investments 0 0
Total 37,117 32,895
Fair Value, Recurring | Level 1 | U.S. government treasury securities    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis    
Total short-term investments 0 0
Fair Value, Recurring | Level 1 | Corporate debt securities    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis    
Total short-term investments 0 0
Fair Value, Recurring | Level 1 | U.S. government agency securities    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis    
Total short-term investments 0 0
Fair Value, Recurring | Level 1 | Commercial paper    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis    
Total short-term investments 0 0
Fair Value, Recurring | Level 1 | Asset-backed securities    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis    
Total short-term investments   0
Fair Value, Recurring | Level 1 | Money market funds    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis    
Total cash equivalents 37,117 32,895
Fair Value, Recurring | Level 2    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis    
Total cash equivalents 0 0
Total short-term investments 108,220 112,281
Total 108,220 112,281
Fair Value, Recurring | Level 2 | U.S. government treasury securities    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis    
Total short-term investments 83,567 85,576
Fair Value, Recurring | Level 2 | Corporate debt securities    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis    
Total short-term investments 13,757 13,725
Fair Value, Recurring | Level 2 | U.S. government agency securities    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis    
Total short-term investments 5,987 7,991
Fair Value, Recurring | Level 2 | Commercial paper    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis    
Total short-term investments 4,909 4,845
Fair Value, Recurring | Level 2 | Asset-backed securities    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis    
Total short-term investments   144
Fair Value, Recurring | Level 2 | Money market funds    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis    
Total cash equivalents $ 0 $ 0