Property, Plant and Equipment (Tables)

12 Months Ended

Jul. 31, 2014

Property Plant And Equipment [Abstract]

Schedule of Property, Plant and Equipment

July 31  (in thousands)	2014			2013
Equipment	$	438,899		$	436,127
Land and buildings		53,895			51,294
Computer software		116,775			105,449
Leasehold improvements		42,190			45,141
Furniture and fixtures		6,249			6,187
		658,008			644,198
Less accumulated depreciation and amortization		(576,248	)		(563,456	)
Property, plant and equipment, net	$	81,760		$	80,742