Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Stock-Based Compensation) (Details)

v3.5.0.2
Summary of Significant Accounting Policies (Stock-Based Compensation) (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Effect on income before income taxes $ (1,390) $ (1,162) $ (795)
Effect on income taxes 186 221 326
Effect on net income $ (1,204) $ (941) $ (469)
Restricted Stock | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Option vesting period 6 months    
Restricted Stock | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Option vesting period 4 years    
Stock Options      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
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% 2.00%
Expected life 6 years 6 years 6 years
Dividend rate 0.00% 0.00% 0.00%
Volatility 63.00% 67.00% 69.00%
Stock Options | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Option vesting period 6 months    
Stock Options | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Option vesting period 4 years    
Expiration period 10 years