Leases - Schedule of Supplemental Cash Flow Information Related to Leases (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2024	Jul. 31, 2023	Jul. 31, 2024	Jul. 31, 2023
Leases [Abstract]
Cash paid for operating leases included in operating cash flows	$ 1,004	$ 1,025	$ 1,987	$ 1,993
Supplemental non-cash information related to lease liabilities arising from obtaining right-of-use assets	31	58	67	120
Leased assets obtained in exchange for operating lease liabilities arising from lease modifications	$ 3,335	$ 0	$ 3,335	$ 0