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taxes.","units":{"USD":[{"end":"2012-08-31","val":31676000,"accn":"0001193125-12-437801","fy":2012,"fp":"FY","form":"10-K","filed":"2012-10-26","frame":"CY2012Q3I"},{"end":"2013-08-31","val":26864000,"accn":"0000868611-13-000037","fy":2013,"fp":"FY","form":"10-K","filed":"2013-10-25","frame":"CY2013Q3I"},{"end":"2014-08-31","val":26743000,"accn":"0000868611-14-000054","fy":2014,"fp":"FY","form":"10-K","filed":"2014-10-24","frame":"CY2014Q3I"},{"end":"2015-08-31","val":24440000,"accn":"0000868611-15-000057","fy":2015,"fp":"FY","form":"10-K","filed":"2015-10-23","frame":"CY2015Q3I"},{"end":"2016-08-31","val":21064000,"accn":"0000868611-16-000124","fy":2016,"fp":"FY","form":"10-K","filed":"2016-10-31","frame":"CY2016Q3I"},{"end":"2017-08-31","val":19631000,"accn":"0000868611-17-000050","fy":2017,"fp":"FY","form":"10-K","filed":"2017-10-27","frame":"CY2017Q3I"},{"end":"2018-08-31","val":15457000,"accn":"0000868611-18-000055","fy":2018,"fp":"FY","form":"10-K","filed":"2018-10-23","frame":"CY2018Q3I"}]}},"CapitalLeasesFutureMinimumPaymentsReceivable":{"label":"Capital Leases, Future Minimum Payments Receivable","description":"Amount of minimum lease payments to be received by the lessor for capital leases.","units":{"USD":[{"end":"2016-08-31","val":15108000,"accn":"0000868611-17-000008","fy":2017,"fp":"Q1","form":"10-Q","filed":"2017-01-06"},{"end":"2016-08-31","val":15108000,"accn":"0000868611-17-000023","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-04-04"},{"end":"2016-08-31","val":15108000,"accn":"0000868611-17-000036","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-06-30"},{"end":"2016-08-31","val":15108000,"accn":"0000868611-17-000050","fy":2017,"fp":"FY","form":"10-K","filed":"2017-10-27","frame":"CY2016Q3I"},{"end":"2016-11-30","val":33490000,"accn":"0000868611-17-000008","fy":2017,"fp":"Q1","form":"10-Q","filed":"2017-01-06","frame":"CY2016Q4I"},{"end":"2017-02-28","val":33988000,"accn":"0000868611-17-000023","fy":2017,"fp":"Q2","form":"10-Q","filed":"2017-04-04","frame":"CY2017Q1I"},{"end":"2017-05-31","val":18043000,"accn":"0000868611-17-000036","fy":2017,"fp":"Q3","form":"10-Q","filed":"2017-06-30","frame":"CY2017Q2I"},{"end":"2017-08-31","val":18156000,"accn":"0000868611-17-000050","fy":2017,"fp":"FY","form":"10-K","filed":"2017-10-27"},{"end":"2017-08-31","val":18156000,"accn":"0000868611-18-000055","fy":2018,"fp":"FY","form":"10-K","filed":"2018-10-23","frame":"CY2017Q3I"},{"end":"2018-08-31","val":17068000,"accn":"0000868611-18-000055","fy":2018,"fp":"FY","form":"10-K","filed":"2018-10-23","frame":"CY2018Q3I"}]}},"CapitalLeasesFutureMinimumPaymentsReceivableCurrent":{"label":"Capital 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Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.","units":{"USD":[{"end":"2013-08-31","val":407000,"accn":"0000868611-13-000037","fy":2013,"fp":"FY","form":"10-K","filed":"2013-10-25","frame":"CY2013Q3I"},{"end":"2014-08-31","val":319000,"accn":"0000868611-14-000054","fy":2014,"fp":"FY","form":"10-K","filed":"2014-10-24","frame":"CY2014Q3I"},{"end":"2017-08-31","val":1087000,"accn":"0000868611-17-000050","fy":2017,"fp":"FY","form":"10-K","filed":"2017-10-27","frame":"CY2017Q3I"},{"end":"2018-08-31","val":1156000,"accn":"0000868611-18-000055","fy":2018,"fp":"FY","form":"10-K","filed":"2018-10-23","frame":"CY2018Q3I"}]}},"CapitalLeasesFutureMinimumPaymentsReceivableDueThereafter":{"label":"Capital Leases, Future Minimum Payments, Receivable Thereafter","description":"Amount of minimum lease payments to be received by the lessor for capital leases after the fifth fiscal year following the latest fiscal year. 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Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.","units":{"USD":[{"end":"2011-08-31","val":497000000,"accn":"0001193125-12-296257","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-07-06"},{"end":"2011-08-31","val":497000000,"accn":"0001193125-12-437801","fy":2012,"fp":"FY","form":"10-K","filed":"2012-10-26","frame":"CY2011Q3I"},{"end":"2012-05-31","val":510000000,"accn":"0001193125-12-296257","fy":2012,"fp":"Q3","form":"10-Q","filed":"2012-07-06","frame":"CY2012Q2I"},{"end":"2012-08-31","val":510800000,"accn":"0001193125-12-437801","fy":2012,"fp":"FY","form":"10-K","filed":"2012-10-26"},{"end":"2012-08-31","val":510800000,"accn":"0001193125-13-003873","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-01-04"},{"end":"2012-08-31","val":510800000,"accn":"0001193125-13-143720","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-04-05"},{"end":"2012-08-31","val":510800000,"accn":"0000868611-13-000011","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-07-03"},{"end":"2012-08-31","val":510800000,"accn":"0000868611-13-000037","fy":2013,"fp":"FY","form":"10-K","filed":"2013-10-25","frame":"CY2012Q3I"},{"end":"2012-11-30","val":509300000,"accn":"0001193125-13-003873","fy":2013,"fp":"Q1","form":"10-Q","filed":"2013-01-04","frame":"CY2012Q4I"},{"end":"2013-02-28","val":479600000,"accn":"0001193125-13-143720","fy":2013,"fp":"Q2","form":"10-Q","filed":"2013-04-05","frame":"CY2013Q1I"},{"end":"2013-05-31","val":474900000,"accn":"0000868611-13-000011","fy":2013,"fp":"Q3","form":"10-Q","filed":"2013-07-03","frame":"CY2013Q2I"},{"end":"2013-08-31","val":447600000,"accn":"0000868611-13-000037","fy":2013,"fp":"FY","form":"10-K","filed":"2013-10-25"},{"end":"2013-08-31","val":447600000,"accn":"0000868611-14-000022","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-04-04"},{"end":"2013-08-31","val":447600000,"accn":"0000868611-14-000035","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-07-03"},{"end":"2013-08-31","val":447600000,"accn":"0000868611-14-000054","fy":2014,"fp":"FY","form":"10-K","filed":"2014-10-24","frame":"CY2013Q3I"},{"end":"2014-02-28","val":442700000,"accn":"0000868611-14-000022","fy":2014,"fp":"Q2","form":"10-Q","filed":"2014-04-04","frame":"CY2014Q1I"},{"end":"2014-05-31","val":440300000,"accn":"0000868611-14-000035","fy":2014,"fp":"Q3","form":"10-Q","filed":"2014-07-03","frame":"CY2014Q2I"},{"end":"2014-08-31","val":437800000,"accn":"0000868611-14-000054","fy":2014,"fp":"FY","form":"10-K","filed":"2014-10-24"},{"end":"2014-08-31","val":437800000,"accn":"0000868611-15-000007","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-01-08","frame":"CY2014Q3I"},{"end":"2014-11-30","val":435400000,"accn":"0000868611-15-000007","fy":2015,"fp":"Q1","form":"10-Q","filed":"2015-01-08","frame":"CY2014Q4I"}]}},"LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths":{"label":"Long-Term Debt, Maturity, Year One","description":"Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in next fiscal year following current fiscal year. 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Leases, Rent Expense, Sublease Rentals","description":"The total amount of sublease rental income recognized during the period that reduces the entity's rent expense incurred under operating 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Loss Carryforwards, Valuation Allowance","description":"The portion of the valuation allowance pertaining to the deferred tax asset representing potential future taxable deductions from net operating loss carryforwards for which it is more likely than not that a tax benefit will not be 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Accrued Liabilities, Current","description":"Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if 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Assets, Current","description":"Amount of current assets classified as 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Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer 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for Loan, Lease, and Other Losses","description":"Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.","units":{"USD":[{"start":"2010-09-01","end":"2011-08-31","val":694000,"accn":"0001193125-12-437801","fy":2012,"fp":"FY","form":"10-K","filed":"2012-10-26","frame":"CY2011"},{"start":"2011-09-01","end":"2012-08-31","val":520000,"accn":"0001193125-12-437801","fy":2012,"fp":"FY","form":"10-K","filed":"2012-10-26","frame":"CY2012"}]}},"PurchaseObligation":{"label":"Purchase Obligation","description":"Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a 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