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Debt and Leases Debt (Details) (USD $) In Thousands, unless otherwise specified | Apr. 30, 2014
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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

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