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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

- Definition

Amount of judgment or settlement awarded to (against) the entity in respect of litigation.

+ References

No definition available.

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X

- 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.

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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

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- Definition

Liabilities related to indemnification agreement.

+ References

No definition available.

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- Definition

Purchase commitments amount outstanding.

+ References

No definition available.

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- Details

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- Details

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