Intangible Assets, Net - Summary of Carrying Amounts of Intangible Assets (Detail) - USD ($)	Apr. 30, 2021	Jan. 31, 2021
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 25,225,000	$ 25,143,000
Accumulated Amortization	(7,934,000)	(6,440,000)
Net Carrying Amount	17,291,000	18,703,000
In-process research and development [Member]
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	4,100,000	4,100,000
Accumulated Amortization	0	0
Net Carrying Amount	4,100,000	4,100,000
Software licenses [Member]
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	21,125,000	21,043,000
Accumulated Amortization	(7,934,000)	(6,440,000)
Net Carrying Amount	$ 13,191,000	$ 14,603,000