Financial Instruments and Fair Value - Schedule of Cash Equivalents and Marketable Debt Securities (Detail) - USD ($) $ in Thousands	Oct. 31, 2023	Jan. 31, 2023
Schedule of Available-for-sale Securities [Line Items]
Total cash equivalents and marketable debt securities	$ 103,820	$ 101,194
Included in cash equivalents [Member]
Schedule of Available-for-sale Securities [Line Items]
Total cash equivalents and marketable debt securities	25,271	7,872
Included in marketable debt securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Total cash equivalents and marketable debt securities	$ 78,549	$ 93,322