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Commitments And Contingencies (Narrative) (Details) - USD ($) $ in Millions |  | 12 Months Ended
--- | --- | ---
Nov. 19, 2015 | Aug. 31, 2016 | Aug. 31, 2015 | Aug. 31, 2014
Loss Contingencies [Line Items] |  |  |  |
Rent expense |  | $ 1.9 | $ 2.1 | $ 2.1
Attorney's fees and costs | $ 1.5 |  |  |
Purchase Commitment [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Commitment outstanding |  | 0.0 |  |
Indemnification Agreement [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Liabilities related to indemnification agreement |  | 0.0 |  |
Senior Officers And Directors [Member] | Indemnification Agreement [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Liabilities related to indemnification agreement |  | $ 0.0 |  |

X
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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X
- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 + Details
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- Details
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- Details
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X
- Details
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