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Debt and Leases Debt (Details) (USD $) In Thousands, unless otherwise specified | Apr. 30, 2013
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Debt Instrument [Line Items] |
Debt and Capital Leases, minimum payment due in less than 12 months | $ 410
Debt and Capital Leases, Future Minimum Payments, Due in Two Years | 331
Debt and Capital Leases, Future Minimum Payments, Due in Three Years | 286
Debt and Capital Leases, Future Minimum Payments, Due in Four Years | 233
Debt and Capital Leases, Future Minimum Payments, Due in Five Years | 245
Debt and Capital Leases, Future Minimum Payments, Due Thereafter | 5,749
Debt and Capital Leases, Future Minimum Payments Due | $ 7,254

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