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Equity Securities and Stock-Based Compensation (Details 5) (USD $)
In Millions, except Share data in Thousands, unless otherwise specified
12 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2011
Equity Securities and Stock-based Compensation      
Compensation expense related to restricted stock, restricted stock units and the ESPP $ 0.7 $ 0.7 $ 1.9
Total compensation cost related to unvested awards not yet recognized $ 1.3    
Weighted-average period for recognition of compensation cost 1 year 10 months 24 days    
Restricted Stock
     
Equity Securities and Stock-based Compensation      
Awards granted vesting period 3 years    
Shares Outstanding, Beginning Balance 57    
Shares, Granted 153    
Shares, Vested (108)    
Shares, Forfeited 0    
Shares Outstanding, Ending Balance 102    
Weighted-average exercise price, Beginning Balance $ 3.89    
Weighted-average exercise price, Granted $ 6.79    
Weighted-average exercise price, Vested $ 5.26    
Weighted-average exercise price, Ending Balance $ 6.79    
Restricted Stock Units (RSUs)
     
Equity Securities and Stock-based Compensation      
Awards granted vesting period 1 year    
Shares Outstanding, Beginning Balance 0    
Shares Outstanding, Ending Balance 0    
Officers and employees | Restricted Stock
     
Equity Securities and Stock-based Compensation      
Shares, Granted 400    
Non-Affiliated Directors | Restricted Stock Units (RSUs)
     
Equity Securities and Stock-based Compensation      
Shares, Granted 100