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The Incentive Stock Plans (Tables)
12 Months Ended
Sep. 30, 2014
Text Block [Abstract]  
Incentive Stock Plans Option Activity

The following table summarizes option activity from September 30, 2013 through September 30, 2014:

 

     Shares
Available for Grant
    Options
Outstanding
    Aggregate
Intrinsic
Value

(in thousands)
     Weighted
Average
Exercise
Price
     Weighted
Average
Remaining
Contractual
Life
 

Balance as of September 30, 2013

     1,787,537        2,301,638      $ 10,419       $ 10.13         6.5   

Options authorized

     —          —             —        

Options granted

     (571,000     571,000         $ 15.81      

Options cancelled/forfeited/expired

     134,172        (134,172      $ 20.15      

Restricted stock awards forfeited

     —          —             —        

Options exercised

     —          (512,147      $ 7.01      
  

 

 

   

 

 

         

Balance as of September 30, 2014

     1,350,709        2,226,319      $ 15,980       $ 11.70         6.6   
  

 

 

   

 

 

   

 

 

       

Exercisable as of September 30, 2014

       1,529,976      $ 13,144       $ 10.92         5.6   
    

 

 

   

 

 

       
Weighted Average Assumptions of Incentive Stock Plans

The following are the weighted-average assumptions used for the fiscal years ended September 30,

 

     2012     2013     2014  

Dividend yield

     0.0     0.0     0.0

Risk-free interest rate

     0.8     0.6     0.7

Volatility

     89.9     80.1     55.7

Expected life

     4.5 years        4.3 years        3.2 years