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Long-Term Debt (Schedule Of Maturities Of Long-term Debt) (Details) (USD $) In Thousands, unless otherwise specified	Apr. 30, 2013
Long-Term Debt [Abstract]
2014	$ 2,519
2015	1,081
2016	14,089
Long-term Debt, Total	$ 17,689

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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