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Long-Term Debt (Schedule Of Maturities Of Long-term Debt) (Details) (USD $) In Thousands, unless otherwise specified	Jul. 31, 2012
Long-Term Debt [Abstract]
Remainder of 2013	$ 1,647
2014	1,348
2015	1,326
2016	15,132
Long-term Debt, Total	$ 19,453

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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