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Share-Based Compensation Plans (Assumptions Used In Estimating The Fair Value Of The Market-Based Performance Award) (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 12 Months Ended
Apr. 30, 2014
Aug. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of shares   24,210
Fiscal 2014 Grant 2 [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of 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
Unrecognized compensation expense at 8/31/2014  
Fiscal 2014 Grant 1 [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of 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
Unrecognized compensation expense at 8/31/2014  
Fiscal 2013 Grant [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of 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
Unrecognized compensation expense at 8/31/2014  
Fiscal 2012 Grant [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of 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
Unrecognized compensation expense at 8/31/2014  
Fiscal 2011 Grant [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of 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
Unrecognized compensation expense at 8/31/2014  
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
Tranche One [Member] | Fiscal 2014 Grant 2 [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of shares 9,557  
Vesting price per share $ 18.05  
Tranche Two [Member] | Fiscal 2014 Grant 2 [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of shares 3,920  
Vesting price per share $ 22.00