Goodwill And Other Intangible Assets (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended	12 Months Ended				3 Months Ended	12 Months Ended	3 Months Ended
	Apr. 30, 2009	Apr. 30, 2011	Jul. 31, 2011	Jul. 31, 2010	Jul. 31, 2009	Jul. 31, 2011 Heartland [Member]	Oct. 31, 2010 Trademarks [Member]	Jul. 31, 2011 Trademarks [Member]	Apr. 30, 2011 Non-Cash Trademark [Member]	Apr. 30, 2010 Non-Cash Trademark [Member]	Jan. 31, 2009 Non-Cash Trademark [Member]
Aggregate amortization expense for amortizable intangibles			$ 10,262	$ 510	$ 476
Indefinite-lived intangible assets impairment		0					2,036		1,430	500	564
Definite-lived assets, useful life						25
Amortization period, Minimum years			20					20
Amortization period, Maximum years			25					25
Amortization of previously unamortized trademarks, amount			126
Goodwill, Impairment Loss	$ 9,717	$ 0