Quarterly report pursuant to Section 13 or 15(d)

Operating Leases - Additional Information (Detail)

v3.22.1
Operating Leases - Additional Information (Detail)
$ in Thousands
 3 Months Ended 12 Months Ended
Apr. 30, 2022
USD ($)
Apr. 30, 2021
USD ($)
Jan. 31, 2022
USD ($)
Sublease_agreement
Operating Leases Description [Line Items]      
Cash payment made on termination   $ 300  
Net gain (loss) on termination of lease   328  
Number of operating sublease agreements | Sublease_agreement     2
Sublease income $ 44    
Termination Agreement [Member]      
Operating Leases Description [Line Items]      
Total termination payment made   400  
Non cash gain on operating lease     $ 300
Net gain (loss) on termination of lease   $ (100)