Debt and Leases Debt (Details) (USD $) In Thousands, unless otherwise specified	Apr. 30, 2014
Debt Instrument [Line Items]
Debt and Capital Leases, minimum payment due in less than 12 months	$ 401
Debt and Capital Leases, Future Minimum Payments, Due in Two Years	430
Debt and Capital Leases, Future Minimum Payments, Due in Three Years	397
Debt and Capital Leases, Future Minimum Payments, Due in Four Years	2,494
Debt and Capital Leases, Future Minimum Payments, Due in Five Years	1,012
Debt and Capital Leases, Future Minimum Payments, Due Thereafter	6,051
Debt and Capital Leases, Future Minimum Payments Due	$ 10,785

Debt and Capital Leases, Future Minimum Payments Due

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Debt and Capital Leases, Future Minimum Payments, Due in Five Years

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Debt and Capital Leases, Future Minimum Payments, Due in Four Years

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Debt and Capital Leases, Future Minimum Payments, Due in Three Years

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Debt and Capital Leases, Future Minimum Payments, Due in Two Years

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Debt and Capital Leases, Future Minimum Payments, Due Thereafter

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Debt and Capital Leases minimum payment due in less than 12 months

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