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Financial Instruments and Fair Value - Schedule of Available-for-Sale Securities Unrealized Loss Position at Fair Value (Detail) $ in Thousands | Jan. 31, 2024 USD ($)
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Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items] |
Less than 12 Months, Fair Value | $ 28,891
12 Months or Greater, Fair Value | 20,604
Total, Fair Value | 49,495
Less than 12 Months, Unrealized Losses | (99)
12 Months or Greater, Unrealized Losses | (278)
Total, Unrealized Losses | (377)
Corporate bonds [Member] |
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items] |
Less than 12 Months, Fair Value | 9,050
12 Months or Greater, Fair Value | 8,363
Total, Fair Value | 17,413
Less than 12 Months, Unrealized Losses | (19)
12 Months or Greater, Unrealized Losses | (116)
Total, Unrealized Losses | (135)
Asset-backed securities [Member] |
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items] |
Less than 12 Months, Fair Value | 4,821
12 Months or Greater, Fair Value | 6,289
Total, Fair Value | 11,110
Less than 12 Months, Unrealized Losses | (15)
12 Months or Greater, Unrealized Losses | (81)
Total, Unrealized Losses | (96)
U.S. government securities [Member] |
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items] |
Less than 12 Months, Fair Value | 15,020
12 Months or Greater, Fair Value | 5,952
Total, Fair Value | 20,972
Less than 12 Months, Unrealized Losses | (65)
12 Months or Greater, Unrealized Losses | (81)
Total, Unrealized Losses | $ (146)

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