Restructuring, Net - Additional Information (Detail) (USD $)	3 Months Ended						9 Months Ended
	Apr. 30, 2015 Employee	Jan. 31, 2015 Employee	Oct. 31, 2014 Employee	Apr. 30, 2014 Employee	Jan. 31, 2014 Employee	Oct. 31, 2013 Employee	Apr. 30, 2015	Apr. 30, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring charge	$ 1,994,000	$ 1,000,000	$ 1,900,000	$ 3,468,000	$ 1,000,000	$ 900,000	$ 4,936,000	$ 5,440,000
Number of workforce reduction	63	72	93	55	35	49
e-Business Services
Restructuring Cost and Reserve [Line Items]
Restructuring charge related to workforce reduction				300,000
Americas
Restructuring Cost and Reserve [Line Items]
Restructuring charge related to workforce reduction		400,000	400,000	300,000	400,000	200,000
Asia
Restructuring Cost and Reserve [Line Items]
Restructuring charge related to workforce reduction	300,000	100,000	500,000	300,000	300,000	100,000
Europe
Restructuring Cost and Reserve [Line Items]
Restructuring charge related to workforce reduction	$ 1,700,000	$ 500,000	$ 1,000,000	$ 2,600,000	$ 300,000	$ 600,000