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Contingencies and Litigation - Additional Information (Details) (USD $)
In Millions, unless otherwise specified |
6 Months Ended | |
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Feb. 28, 2015
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Aug. 31, 2014
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| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations and Divestiture Activities[Line Items] | ||
| Outstanding letters of credit | $ 18.8us-gaap_LettersOfCreditOutstandingAmount | $ 14.0us-gaap_LettersOfCreditOutstandingAmount |
| Litigation Settlement, Expense | 2.0us-gaap_LitigationSettlementExpense | |
| Discounted present value of future minimum lease payments | 19.5atu_DiscountedPresentValueOfFutureMinimumLeasePayments | |
| Electrical | ||
| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations and Divestiture Activities[Line Items] | ||
| Discounted present value of future minimum lease payments |
$ 14.2atu_DiscountedPresentValueOfFutureMinimumLeasePayments / us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis = atu_ElectricalMember |
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- Definition
Discounted present value of future minimum lease payments. No definition available.
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- Details
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- Definition
The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. No definition available.
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- Definition
Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees. No definition available.
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- Details
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