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Shareholders' Equity and Share-based Payments (Details) (USD $)
 3 Months Ended 6 Months Ended 0 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended
Mar. 31, 2014
item
Mar. 31, 2013
Mar. 31, 2014
Mar. 31, 2013
Sep. 30, 2013
Apr. 17, 2014
Subsequent Event
Jan. 25, 2013
Options
Mar. 31, 2013
Options
Mar. 31, 2014
1998 Plan
Mar. 31, 2013
1998 Plan
Mar. 31, 2014
1998 Plan
Mar. 31, 2013
1998 Plan
Mar. 31, 2014
Restricted Plan
Mar. 31, 2013
Restricted Plan
Mar. 31, 2014
Restricted Plan
Mar. 31, 2013
Restricted Plan
Mar. 31, 2014
Restricted Plan
Non-employee directors
item
Mar. 31, 2014
2009 Plan
Mar. 31, 2013
2009 Plan
Mar. 31, 2014
2009 Plan
Mar. 31, 2013
2009 Plan
Mar. 31, 2014
2009 Plan
Non-employee directors
Mar. 31, 2013
2009 Plan
Non-employee directors
Mar. 31, 2014
2009 Plan
Non-employee directors
Mar. 31, 2013
2009 Plan
Non-employee directors
Mar. 31, 2014
2009 Plan
Employees
Mar. 31, 2013
2009 Plan
Employees
Mar. 31, 2014
2009 Plan
Employees
Mar. 31, 2013
2009 Plan
Employees
Mar. 31, 2014
2009 Plan
Performance-based Award
Employees
Shareholders' Equity and Share-based Payments                                                            
Common stock, shares authorized 75,000,000   75,000,000   75,000,000                                                  
Preferred Stock, shares authorized 10,000,000   10,000,000   10,000,000                                                  
Share-based compensation                                                            
Share-based compensation expense $ 205,000 $ 260,000 $ 440,000 $ 443,000       $ 22,000 $ 0 $ 21,000 $ 0 $ 31,000 $ 0 $ 0 $ 0 $ 0   $ 205,000 $ 239,000 $ 440,000 $ 413,000 $ 50,000 $ 50,000 $ 100,000 $ 100,000 $ 155,000 $ 189,000 $ 340,000 $ 312,000  
Unrecognized compensation cost, related to non-vested stock options                                   59,000   59,000                    
Income tax effect recognized as a charge to additional paid-in capital related to share-based compensation 13,000 2,000 159,000 12,000                                                    
Reduction in applicable option exercise price of each outstanding option (in dollars per share)             $ 1.50                                              
Number of share-based compensation plans maintained by the company 3                                                          
Number of shares of common stock available for awards under the plan                                   350,275   350,275                    
Number of shares of common stock reserved for awards                 3,389,000   3,389,000             1,200,000   1,200,000                    
Fair market value of annual award of non-vested shares                                 40,000                          
Number of quarterly installments of shares awards                                 4                          
Maximum award (in shares)                                                           300,000
Stock repurchase program                                                            
Maximum number of shares of outstanding common stock approved to acquire under repurchase program           250,000                                                
Number of shares of common stock yet to be purchased under the repurchase program 250,000   250,000                                                      
Number of shares of common stock purchased under the repurchase program   0   175                                                    
Cost of common stock purchased under the repurchase program   $ 0   $ 696                                                    
Average market price of common stock purchased under the repurchase program (in dollars per share)   $ 0.00   $ 3.96