Long-Term Debt (Schedule Of Aggregate Maturities For Debt Outstanding) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2014
Long-term Debt, Other Disclosures [Abstract]
2017	$ 13,354
2018	13,397
2019	13,455
2020	279,141
2021	1,080
Thereafter	381,893
Total debt	702,320	$ 816,830
Interest Expense, Debt	42,400	51,200	$ 64,000
Amortization of Financing Costs	$ 1,000	$ 1,300	$ 1,900