Leases - Schedule of Supplemental Cash Flow Information Related to Leases (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Oct. 31, 2021	Oct. 31, 2021
Leases [Abstract]
Cash paid for operating leases included in operating cash flows	$ 918	$ 2,681
Supplemental non-cash information related to lease liabilities arising from obtaining right-of-use assets	95	272
Leased assets obtained in exchange for operating lease liabilities arising from lease modifications	$ 1,112	$ 2,799