Amount of deferred gain on real estate option recorded during the period

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Franchisee Option to Purchase Real Estate

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Number of Company Drive-Ins refranchised during the period

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Refranchised Company Drive-Ins with Direct Financing Lease

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Amount of addition (reduction) to the amount at which an asset could be incurred (settled) in a current transaction between willing parties.

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Amount before tax of gain (loss) recognized on the sale or disposal of a disposal group. Excludes discontinued operations.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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The cash inflow associated with the collection of receivables arising from the lease of real estate, equipment or other fixed assets for a specified time in exchange for payment, usually in the form of rent; excludes proceeds from sales-type lease transactions, which are classified as operating activities.

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The cash inflow from the sale of land held for use; excludes sales of land held as inventory or investments.

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The cash inflow from the sale of property, plant and equipment (capital expenditures), software, and other intangible assets.

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Amount of divestiture of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Refranchising of Company Drive-Ins (Refranchising Initiative Summary) (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Nov. 30, 2016 franchise	Aug. 31, 2017 USD ($) franchise	Aug. 31, 2016 USD ($) franchise	Aug. 31, 2015 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of refranchised Company Drive-Ins \| franchise			38
Proceeds from sales of Company Drive-Ins		$ 91,741	$ 16,206	$ 13,701
Goodwill related to sales of Company Drive-Ins		$ (978)	$ (342)
Franchisee option to purchase real estate, term	24 months
Refranchising Initiative 2017 [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of refranchised Company Drive-Ins \| franchise		110
Proceeds from sales of Company Drive-Ins		$ 20,036
Proceeds from sale of real estate		11,726
Initial and subsequent lease payments for real estate option		(3,178)
Goodwill related to sales of Company Drive-Ins		(966)
Deferred gain for real estate option		(809)
Loss on assets held for sale		(65)
Refranchising initiative gains, net		6,758
Number of drive-ins in refranchising transaction \| franchise	53
Refranchising Initiative 2016 [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of refranchised Company Drive-Ins \| franchise			29
Proceeds from sales of Company Drive-Ins			$ 3,568
Proceeds from sale of real estate			0
Initial and subsequent lease payments for real estate option			0
Goodwill related to sales of Company Drive-Ins			(194)
Deferred gain for real estate option			0
Loss on assets held for sale			0
Refranchising initiative gains, net			972
Land and Building [Member] \| Refranchising Initiative 2017 [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets sold		(12,095)
Land and Building [Member] \| Refranchising Initiative 2016 [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets sold			(2,402)
Drive-In Equipment [Member] \| Refranchising Initiative 2017 [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets sold		$ (7,891)
Drive-In Equipment [Member] \| Refranchising Initiative 2016 [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets sold			$ 0