Debt and Leases Debt (Details) (USD $) In Thousands, unless otherwise specified	Jul. 31, 2013
Debt Instrument [Line Items]
Debt and Capital Leases, minimum payment due in less than 12 months	$ 403
Debt and Capital Leases, Future Minimum Payments, Due in Two Years	309
Debt and Capital Leases, Future Minimum Payments, Due in Three Years	277
Debt and Capital Leases, Future Minimum Payments, Due in Four Years	256
Debt and Capital Leases, Future Minimum Payments, Due in Five Years	40,410
Debt and Capital Leases, Future Minimum Payments, Due Thereafter	4,424
Debt and Capital Leases, Future Minimum Payments Due	$ 46,079

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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