Leases (Schedule Of Future Minimum Rental Payments) (Details) (USD $) In Thousands, unless otherwise specified	Aug. 31, 2013	Aug. 31, 2012
Leases [Abstract]
Operating, 2014	$ 11,195
Operating, 2015	11,153
Operating, 2016	10,601
Operating, 2017	9,899
Operating, 2018	9,564
Operating, Thereafter	89,586
Operating, Total minimum lease payments	141,998
Capital, 2014	6,090
Capital, 2015	5,246
Capital, 2016	4,756
Capital, 2017	4,515
Capital, 2018	4,191
Capital, Thereafter	9,589
Capital, Total minimum lease payments	34,387
Less amount representing interest averaging 6.3%	(7,523)
Capital, Present value of net minimum lease payments	26,864
Less amount due within one year	(4,406)
Capital, Amount due after one year	$ 22,458	$ 27,377
Capital, Average interest rate	6.30%

Percentage of imputed average capital lease interest

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Amount of capital lease obligation due within one year or the normal operating cycle, if longer.

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date.

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Amount of minimum lease payments for capital leases.

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Amount of minimum lease payments maturing in the next fiscal year following the latest fiscal year for capital leases.

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Amount of minimum lease payments maturing in the fifth fiscal year following the latest fiscal year for capital leases.

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Amount necessary to reduce net minimum lease payments to present value for capital leases.

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Present value of minimum lease payments for capital leases net of executory costs, including amounts paid by the lessee to the lessor for insurance, maintenance and taxes.

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Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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