Quarterly report pursuant to Section 13 or 15(d)

Severance and Restructuring Costs - Additional Information (Detail)

v3.20.2
Severance and Restructuring Costs - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jul. 31, 2020
Jul. 31, 2019
Jul. 31, 2020
Jul. 31, 2019
Restructuring And Related Activities [Abstract]        
Severance and restructuring costs $ 543 $ 659 $ 1,029 $ 870