XML 60 R47.htm IDEA: XBRL DOCUMENT v3.24.1
Financial Instruments and Fair Value - Schedule of Available-for-Sale Securities at Fair Value (Detail) - USD ($)
$ in Thousands
Jan. 31, 2024
Jan. 31, 2023
Schedule of Available-for-sale Securities [Line Items]    
Amortized Cost $ 106,299 $ 101,686
Unrealized Gains 194 116
Unrealized Losses (377) (608)
Fair Value 106,116 101,194
Money market funds [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Amortized Cost 296 7,872
Unrealized Gains 0 0
Unrealized Losses 0 0
Fair Value 296 7,872
Commercial paper [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Amortized Cost 30,806 18,333
Unrealized Gains 0 0
Unrealized Losses 0 0
Fair Value 30,806 18,333
Corporate bonds [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Amortized Cost 38,867 23,472
Unrealized Gains 180 50
Unrealized Losses (135) (224)
Fair Value 38,912 23,298
Asset-backed securities [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Amortized Cost 15,212 18,753
Unrealized Gains 14 44
Unrealized Losses (96) (149)
Fair Value 15,130 18,648
U.S. government securities [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Amortized Cost 21,118 33,256
Unrealized Gains 0 22
Unrealized Losses (146) (235)
Fair Value $ 20,972 $ 33,043