Summary of Restructuring Accrual by Reportable Segment (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2011
Restructuring Cost and Reserve [Line Items]
Accrued restructuring, beginning balance	$ 1,724	$ 1,464	$ 3,632
Restructuring charges	14,750	6,716	1,099
Restructuring adjustments	(253)	(300)	(304)
Cash paid	(10,946)	(6,404)	(3,007)
Non-cash adjustments	133	64	44
Reclassification of restructuring charges of discontinued operations	(58)
Accrued restructuring, ending balance	5,164	1,724	1,464
Discontinued Operations
Restructuring Cost and Reserve [Line Items]
Restructuring charges	154	1,039
Cash paid	(340)	(855)
Americas
Restructuring Cost and Reserve [Line Items]
Accrued restructuring, beginning balance	1,086	1,346	3,148
Restructuring charges	1,614	1,706	501
Restructuring adjustments	(21)	(94)	(303)
Cash paid	(2,284)	(1,933)	(1,993)
Non-cash adjustments	(13)	61	(7)
Accrued restructuring, ending balance	382	1,086	1,346
Asia
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2,516	702	593
Restructuring adjustments	(89)	(56)	(7)
Cash paid	(1,899)	(647)	(586)
Non-cash adjustments	(8)	1
Accrued restructuring, ending balance	520
Europe
Restructuring Cost and Reserve [Line Items]
Accrued restructuring, beginning balance	51	118	484
Restructuring charges	9,610	3,766	5
Restructuring adjustments	27	(85)	6
Cash paid	(5,517)	(3,690)	(428)
Non-cash adjustments	85	(58)	51
Accrued restructuring, ending balance	4,256	51	118
All Other
Restructuring Cost and Reserve [Line Items]
Accrued restructuring, beginning balance	343
Restructuring charges	1,010	542
Restructuring adjustments	(170)	(65)
Cash paid	(1,246)	(134)
Non-cash adjustments	69
Accrued restructuring, ending balance	6	343
Discontinued Operations
Restructuring Cost and Reserve [Line Items]
Accrued restructuring, beginning balance	244
Non-cash adjustments		60
Reclassification of restructuring charges of discontinued operations	(58)
Accrued restructuring, ending balance		244
Discontinued Operations | Discontinued Operations
Restructuring Cost and Reserve [Line Items]
Restructuring charges	154	1,039
Cash paid	$ (340)	$ (855)