Leases - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 31, 2024	Jul. 31, 2023	Jul. 31, 2024	Jul. 31, 2023
Lessee, Lease, Description [Line Items]
Additional operating lease right-of-use assets	$ 3.3
Additional operating lease liabilities	3.3
Operating lease expense	$ 1.0	$ 0.9	$ 2.0	$ 1.8
Weighted-average remaining lease term - operating leases	2 years 1 month 17 days		2 years 1 month 17 days
Weighted-average discount rate - operating leases	3.69%		3.69%
Shanghai [Member] | Extended Office Lease [Member]
Lessee, Lease, Description [Line Items]
Lease term	36 months		36 months
Lease inception date	Dec. 01, 2024
Expiration date	Nov. 30, 2027
Shenzhen [Member] | Extended Office Lease [Member]
Lessee, Lease, Description [Line Items]
Lease term	28 months		28 months
Lease inception date	Oct. 01, 2024
Expiration date	Jan. 31, 2027
Italy [Member] | Extended Office Lease [Member]
Lessee, Lease, Description [Line Items]
Lease term	22 months		22 months
Lease inception date	Jul. 01, 2024
Expiration date	Apr. 30, 2026