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Financial Instruments and Fair Value - Schedule of Available-for-Sale Securities Unrealized Loss Position at Fair Value (Detail) $ in Thousands | Oct. 31, 2023 USD ($)
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Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items] |
Less than 12 Months, Fair Value | $ 53,972
12 Months or Greater, Fair Value | 23,963
Total, Fair Value | 77,935
Less than 12 Months, Unrealized Losses | (678)
12 Months or Greater, Unrealized Losses | (548)
Total, Unrealized Losses | (1,226)
Corporate bonds [Member] |
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items] |
Less than 12 Months, Fair Value | 29,661
12 Months or Greater, Fair Value | 9,098
Total, Fair Value | 38,759
Less than 12 Months, Unrealized Losses | (406)
12 Months or Greater, Unrealized Losses | (236)
Total, Unrealized Losses | (642)
Asset-backed securities [Member] |
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items] |
Less than 12 Months, Fair Value | 9,550
12 Months or Greater, Fair Value | 7,463
Total, Fair Value | 17,013
Less than 12 Months, Unrealized Losses | (87)
12 Months or Greater, Unrealized Losses | (169)
Total, Unrealized Losses | (256)
U.S. government securities [Member] |
Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items] |
Less than 12 Months, Fair Value | 14,761
12 Months or Greater, Fair Value | 7,402
Total, Fair Value | 22,163
Less than 12 Months, Unrealized Losses | (185)
12 Months or Greater, Unrealized Losses | (143)
Total, Unrealized Losses | $ (328)

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