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Goodwill - Additional Information (Detail)
12 Months Ended
Jan. 31, 2022
USD ($)
Segment
Jan. 31, 2021
USD ($)
Jan. 31, 2020
USD ($)
Nov. 05, 2021
USD ($)
Finite Lived Intangible Assets [Line Items]        
Number of reportable segments | Segment 1      
Goodwill $ 303,625,000 $ 26,601,000    
Goodwill impairment 0 $ 0 $ 0  
Oculii Corp [Member]        
Finite Lived Intangible Assets [Line Items]        
Goodwill       $ 277,024,000
Increase in goodwill 277,000,000.0      
Reporting Unit [Member]        
Finite Lived Intangible Assets [Line Items]        
Goodwill $ 0