Restructuring, Net - Additional Information (Detail) $ in Thousands	3 Months Ended				6 Months Ended
	Jan. 31, 2017 USD ($) Employee	Oct. 31, 2016 USD ($) Employee	Jan. 31, 2016 USD ($)	Oct. 31, 2015 USD ($) Employee	Jan. 31, 2017 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 800	$ 1,400	$ 200	$ 1,000	$ 2,120
Number of workforce reduction | Employee	18	50		55
Employee-related Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges					1,723
Contractual Obligations
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 100	$ 300			397
Americas
Restructuring Cost and Reserve [Line Items]
Restructuring charges					480
Americas | Employee-related Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	200	200	100	$ 800
Asia
Restructuring Cost and Reserve [Line Items]
Restructuring charges					854
Asia | Employee-related Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	300	400		$ 300
Europe
Restructuring Cost and Reserve [Line Items]
Restructuring charges					668
Europe | Employee-related Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	100	$ 500	$ 100
e-Business Services
Restructuring Cost and Reserve [Line Items]
Restructuring charges					$ 118
e-Business Services | Employee-related Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 100