Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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+ Details

Goodwill And Other Intangible Assets (Narrative) (Details) (USD $) In Thousands, unless otherwise specified			3 Months Ended	9 Months Ended
	Apr. 30, 2012	Jul. 31, 2011	Oct. 31, 2010 Trademarks [Member]	Apr. 30, 2012 Trademarks [Member] Y	Apr. 30, 2011 Non-Cash trademark [Member]	Apr. 30, 2012 Buses [Member]
Finite-Lived Intangible Assets [Line Items]
Definite-lived assets, useful lives, years				25
Definite-lived assets, useful lives minimum, years				20
Goodwill	$ 245,209	$ 244,452				$ 7,106
Indefinite-lived intangible assets impairment			$ 2,036		$ 1,430