Quarterly report pursuant to Section 13 or 15(d)

Severance and Restructuring Costs - Additional Information (Detail)

v3.20.1
Severance and Restructuring Costs - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended
Apr. 30, 2020
Apr. 30, 2019
Restructuring And Related Activities [Abstract]    
Severance and restructuring costs $ 486 $ 211