Financial Instruments and Fair Value - Schedule of Available-for-Sale Securities at Fair Value (Detail) - USD ($) $ in Thousands	Jan. 31, 2025	Jan. 31, 2024
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 109,725	$ 113,299
Unrealized Gains	139	194
Unrealized Losses	(372)	(377)
Fair Value	109,492	113,116
Money market funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	849	296
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Value	849	296
Fixed deposits [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	3,000	7,000
Unrealized Gains	0
Unrealized Losses	0
Fair Value	3,000	7,000
Commercial paper [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	0	30,806
Unrealized Gains	0	0
Unrealized Losses	0	0
Fair Value	0	30,806
Corporate bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	55,138	38,867
Unrealized Gains	111	180
Unrealized Losses	(123)	(135)
Fair Value	55,126	38,912
Asset-backed securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	20,412	15,212
Unrealized Gains	20	14
Unrealized Losses	(67)	(96)
Fair Value	20,365	15,130
U.S. government securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	30,326	21,118
Unrealized Gains	8	0
Unrealized Losses	(182)	(146)
Fair Value	$ 30,152	$ 20,972