Goodwill And Other Intangible Assets (Reconciliation Of Goodwill) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jan. 31, 2014
Goodwill [Line Items]
Beginning Balance	$ 165,568
Foreign exchange translation	858
Ending Balance	166,426
Engine Products [Member]
Goodwill [Line Items]
Beginning Balance	72,321
Foreign exchange translation	110
Ending Balance	72,431
Industrial Products [Member]
Goodwill [Line Items]
Beginning Balance	93,247
Foreign exchange translation	748
Ending Balance	$ 93,995