Quarterly report pursuant to Section 13 or 15(d)

Severance and Restructuring Costs - Additional Information (Detail)

v3.19.2
Severance and Restructuring Costs - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jul. 31, 2019
Jul. 31, 2018
Jul. 31, 2019
Jul. 31, 2018
Restructuring Cost and Reserve [Line Items]        
Severance and restructuring costs $ 659 $ 536 $ 870 $ 590
Total restructuring charges incurred     799  
2019 Restructuring Program [Member]        
Restructuring Cost and Reserve [Line Items]        
Total restructuring charges incurred $ 700   $ 800