Goodwill And Other Intangible Assets (Reconciliation Of Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jul. 31, 2012	Jul. 31, 2011
Goodwill And Other Intangible Assets [Abstract]
Beginning balance, Gross Carrying Amount	$ 85,439	$ 83,487
Beginning balance, Accumulated Amortization	(31,943)	(25,195)
Beginning balance, Net Intangible Assets	53,496	58,292
Amortization expense, Accumulated Amortization	(5,778)	(5,917)
Amortization expense, Net Intangible Assets	(5,778)	(5,917)
Foreign exchange translation, Gross Carrying Value	(3,834)	1,952
Foreign exchange translation, Accumulated Amortization	2,316	(831)
Foreign exchange translation, Net Intangible Assets	(1,518)	1,121
Intangibles retired, Gross Carrying Amount	(1,530)
Intangibles retired, Accumulated Amortization	1,530
Ending balance, Gross Carrying Amount	80,075	85,439
Ending balance, Accumulated Amortization	(33,875)	(31,943)
Ending balance, Net Intangible Assets	$ 46,200	$ 53,496