XML 45 R33.htm IDEA: XBRL DOCUMENT v3.22.2.2
Fair Value Measurements - Fair Value Hierarchy For Company's Assets Measured at Fair Value on Recurring Basis (Details) - USD ($)
$ in Thousands
Jul. 31, 2022
Jan. 31, 2022
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total cash equivalents $ 42,090 $ 86,505
Total short-term investments 145,767 110,266
U.S. government treasury securities    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total short-term investments   39,211
Corporate debt securities    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total short-term investments 27,354 30,090
Commercial paper    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total short-term investments 23,647 40,965
Asset-backed securities    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total short-term investments 2,940  
Money market funds    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total cash equivalents 42,090 86,505
Fair Value, Recurring    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total cash equivalents 42,090 86,505
Total short-term investments 145,767 110,266
Total 187,857 196,771
Fair Value, Recurring | U.S. government treasury securities    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total short-term investments 91,826 39,211
Fair Value, Recurring | Corporate debt securities    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total short-term investments 27,354 30,090
Fair Value, Recurring | Commercial paper    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total short-term investments 23,647 40,965
Fair Value, Recurring | Asset-backed securities    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total short-term investments 2,940  
Fair Value, Recurring | Level 1    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total cash equivalents 42,090 86,505
Total short-term investments 0 0
Total 42,090 86,505
Fair Value, Recurring | Level 1 | U.S. government treasury securities    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
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 [Line Items]    
Total short-term investments 0 0
Fair Value, Recurring | Level 1 | Commercial paper    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
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 [Line Items]    
Total short-term investments 0  
Fair Value, Recurring | Level 2    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total cash equivalents 0 0
Total short-term investments 145,767 110,266
Total 145,767 110,266
Fair Value, Recurring | Level 2 | U.S. government treasury securities    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total short-term investments 91,826 39,211
Fair Value, Recurring | Level 2 | Corporate debt securities    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total short-term investments 27,354 30,090
Fair Value, Recurring | Level 2 | Commercial paper    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total short-term investments 23,647 40,965
Fair Value, Recurring | Level 2 | Asset-backed securities    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total short-term investments 2,940  
Fair Value, Recurring | Money market funds    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total cash equivalents 42,090 86,505
Fair Value, Recurring | Money market funds | Level 1    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total cash equivalents 42,090 86,505
Fair Value, Recurring | Money market funds | Level 2    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total cash equivalents $ 0 $ 0