Goodwill And Other Intangible Assets (Change In Carrying Value In Goodwill And Indefinite-Lived Trademarks) (Details) (USD $) In Thousands			3 Months Ended
Oct. 31, 2011	Jul. 31, 2011	Oct. 31, 2011 Heartland [Member] Towables [Member]
Segment Reporting Information [Line Items]
Balance at July 31, 2011	$ 245,209	$ 244,452
Adjustment to Heartland acquisition goodwill in towables reportable segment			757
Balance at October 31, 2011	$ 245,209	$ 244,452

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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