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Summary of Significant Accounting Policies (Stock-Based Compensation) (Details) (USD $)
1 Months Ended 3 Months Ended 12 Months Ended
Jun. 30, 2013
Employees
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2012
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     $ (795,000) [1] $ (2,472,000) [1] $ (1,763,000) [1]
Effect on income taxes     326,000 512,000 255,000
Effect on net income     (469,000) (1,960,000) (1,508,000)
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 110        
Shares of common stock to be purchased as result of acceleration of the vesting   400,000      
Nonvested awards, total compensation cost not yet recognized 900,000        
Exercisable at end of period, weighted average exercise price (usd per share)   $ 7.13 $ 8.18 $ 7.13 $ 9.25
Options, forfeitures in period     5,506 136,126 4,891
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% 1.00% 1.00%
Expected life (in years)     6 years 6 years 6 years
Dividend rate     0.00% 0.00% 0.00%
Volatility     69.00% 70.00% 70.00%
Stock Options | Maximum
         
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
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 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   $ (300,000)      
[1] (1) Stock-based compensation expense is included in selling, general and administrative expense