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Long-Term Credit (Schedule Of Long-Term Debt) (Details) (USD $) In Thousands, unless otherwise specified	Jul. 31, 2012	Jul. 31, 2011
Debt Disclosure [Abstract]
Notes payable	$ 3,972	$ 5,000
Less current maturities	(1,084)	(917)
Notes payable - non-current	$ 2,888	$ 4,083

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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