Goodwill And Other Intangible Assets (Reconciliation Of Goodwill) (Details) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Jan. 31, 2015
Goodwill [Line Items]  
Beginning Balance $ 166,406
Goodwill acquired 60,266
Foreign exchange translation (8,353)
Ending Balance 218,319
Engine Products [Member]  
Goodwill [Line Items]  
Beginning Balance 72,373
Foreign exchange translation (1,226)
Ending Balance 71,147
Industrial Products [Member]  
Goodwill [Line Items]  
Beginning Balance 94,033
Goodwill acquired 60,266
Foreign exchange translation (7,127)
Ending Balance $ 147,172