Inventories (Tables)

9 Months Ended

Apr. 30, 2013

Inventories [Abstract]

Components Of Inventory

	April 30, 2013		July 31, 2012
Materials	$	101,528	$	111,808
Work in process		32,847		30,767
Finished products		106,101		113,541
Total inventories	$	240,476	$	256,116