Financial Instruments and Fair Value - Schedule of Available-for-Sale Securities at Fair Value (Detail) - USD ($) $ in Thousands	Oct. 31, 2023	Jan. 31, 2023
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 105,039	$ 101,686
Unrealized Gains	7	116
Unrealized Losses	(1,226)	(608)
Fair Value	103,820	101,194
Money market funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	1,649	7,872
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Value	1,649	7,872
Commercial paper [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	22,963	18,333
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Value	22,963	18,333
Corporate bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	40,667	23,472
Unrealized Gains	7	50
Unrealized Losses	(642)	(224)
Fair Value	40,032	23,298
Asset-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	17,269	18,753
Unrealized Gains	0	44
Unrealized Losses	(256)	(149)
Fair Value	17,013	18,648
U.S. government securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	22,491	33,256
Unrealized Gains	0	22
Unrealized Losses	(328)	(235)
Fair Value	$ 22,163	$ 33,043