Inventories (Tables)

9 Months Ended

Apr. 30, 2012

Inventories [Abstract]

Components Of Inventory

	April 30, 2012		July 31, 2011
Materials	$	112,706	$	110,466
Work in process		32,659		33,917
Finished products		120,096		127,093
Total inventories	$	265,461	$	271,476