Quarterly report pursuant to Section 13 or 15(d)

Operating Leases - Additional Information (Detail)

v3.20.2
Operating Leases - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Oct. 31, 2020
Oct. 31, 2020
Leases [Abstract]    
Rent payments $ 0.3 $ 0.8