Stock-Based Compensation Plans (Assumptions Used In Estimating The Fair Value Of The Market-Based Performance Award) (Details) $ / shares in Units, $ in Thousands	12 Months Ended
Aug. 31, 2016 USD ($) $ / shares shares
Fiscal 2014 Grant 2 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares \| shares	13,477
Grant date share price per share	$ 20.01
Volatility	47.10%
Dividend yield	0.00%
Risk-free rate	1.70%
Grant date	Apr. 16, 2014
Fair value of award \| $	$ 265
Derived service period	2 months 12 days
Fiscal 2014 Grant 1 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares \| shares	8,352
Vesting price per share	$ 22.00
Grant date share price per share	$ 19.68
Volatility	52.80%
Dividend yield	0.00%
Risk-free rate	1.39%
Grant date	Nov. 22, 2013
Fair value of award \| $	$ 155
Derived service period	2 months 12 days
Fiscal 2013 Grant [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares \| shares	120,101
Vesting price per share	$ 22.00
Grant date share price per share	$ 16.03
Volatility	54.20%
Dividend yield	0.00%
Risk-free rate	1.37%
Grant date	Jul. 18, 2013
Fair value of award \| $	$ 1,651
Derived service period	7 months 6 days
Fiscal 2012 Grant [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares \| shares	177,616
Vesting price per share	$ 18.05
Grant date share price per share	$ 9.55
Volatility	54.60%
Dividend yield	0.00%
Risk-free rate	0.62%
Grant date	Jul. 19, 2012
Fair value of award \| $	$ 1,188
Derived service period	1 year 4 months 24 days
Fiscal 2011 Grant [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares \| shares	294,158
Vesting price per share	$ 17.00
Grant date share price per share	$ 11.34
Volatility	49.80%
Dividend yield	0.00%
Risk-free rate	1.48%
Grant date	Jul. 15, 2011
Fair value of award \| $	$ 2,647
Derived service period	10 months 24 days
Minimum [Member] \| Fiscal 2014 Grant 2 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting price per share	$ 18.05
Maximum [Member] \| Fiscal 2014 Grant 2 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting price per share	$ 22.00

Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Fair Value Of Award

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Grant Date

+ References

No definition available.

+ Details

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Agreed-upon price for the exchange of the underlying asset relating to the share-based payment award.

+ References

No definition available.

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(iii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(ii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(iv)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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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.

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- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

+ Details

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- Definition

Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 14.D.2)
-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 14
-Section D
-Subsection 2

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