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Summary of Significant Accounting Policies (Stock-Based Compensation) (Details)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 12 Months Ended
Jun. 30, 2013
USD ($)
Employees
$ / shares
shares
Mar. 31, 2014
USD ($)
$ / shares
shares
Sep. 30, 2015
USD ($)
$ / shares
shares
Sep. 30, 2014
USD ($)
shares
Sep. 30, 2013
USD ($)
$ / shares
shares
Jun. 30, 2014
$ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Percentage of unvested stock options approved for acceleration   50.00%        
Effect on income before income taxes | $     $ (1,162) $ (795) $ (2,472) [1]  
Effect on income taxes | $     221 326 512  
Effect on net income | $     $ (941) $ (469) $ (1,960)  
Restricted Stock | Maximum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Option vesting period (in years)     4 years      
Restricted Stock | Minimum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Option vesting period (in years)     2 years      
Stock Options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Exercise price $ 17.12          
Number of employees holding options | Employees 110          
Shares of common stock to be purchased as result of acceleration of the vesting | shares   400,000        
Nonvested awards, total compensation cost not yet recognized | $ $ 900          
Exercisable at end of period, weighted average exercise price (usd per share)     $ 9.74   $ 7.13 $ 8.18
Options, forfeitures in period | shares     35,875 5,506 136,126  
Expiration period     10 years      
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]            
Risk free interest rate     2.00% 2.00% 1.00%  
Expected life (in years)     6 years 6 years 6 years  
Dividend rate     0.00% 0.00% 0.00%  
Volatility     67.00% 69.00% 70.00%  
Stock Options | Maximum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Expiration period     10 years      
Option vesting period (in years)     4 years      
Stock Options | Minimum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Option vesting period (in years)     2 years      
One Half of Unvested Stock Options | Stock Options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Exercise price   $ 2.95        
Remaining Unvested Stock Options | Stock Options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Exercise price range, lower range limit   6.15        
Exercise price range, upper range limit   $ 7.98        
Accelerated | Stock Options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Exercisable at end of period, weighted average exercise price (usd per share) $ 5.77          
Vested and Unvested | Stock Options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Options, forfeitures in period | shares 100,000          
Vested | Stock Options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Exercise price $ 14.79          
Unvested | Stock Options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Exercise price $ 17.12          
Effect on income before income taxes | $   $ (300)        
[1] (1) Stock-based compensation expense is included in selling, general and administrative expense