Goodwill And Other Intangible Assets (Reconciliation Of Goodwill) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2015	Jul. 31, 2014
Goodwill [Line Items]
Beginning Balance	$ 166,406	$ 165,568
Goodwill acquired	66,814
Foreign exchange translation	(9,488)	838
Ending Balance	223,732	166,406
Engine Products [Member]
Goodwill [Line Items]
Beginning Balance	72,373	72,321
Foreign exchange translation	(1,401)	52
Ending Balance	70,972	72,373
Industrial Products [Member]
Goodwill [Line Items]
Beginning Balance	94,033	93,247
Goodwill acquired	66,814
Foreign exchange translation	(8,087)	786
Ending Balance	$ 152,760	$ 94,033