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Financing Agreements (Details) (USD $)	Apr. 30, 2014	Apr. 30, 2013
Debt Instrument [Line Items]
Long-term Debt	$ 651,000	$ 795,000
Current Maturities of Long Term Debt	(124,000)	(140,000)
Long-term Debt, Excluding Current Maturities	527,000	655,000
Mortgages [Member]
Debt Instrument [Line Items]
Long-term Debt	533,000	568,000
Equipment Loan Note Payable [Member]
Debt Instrument [Line Items]
Long-term Debt	116,000	195,000
Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Long-term Debt	$ 2,000	$ 32,000

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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