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

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

 

     Shares
Available
for Grant
    Options
Outstanding
    Aggregate
Intrinsic
Value (in
thousands)
     Weighted
Average
Exercise
Price
     Weighted
Average
Remaining
Contractual
Life
 

Balance at September 30, 2013

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

Options granted

     (571,000     571,000         $ 15.81      

Options cancelled/forfeited/expired

     115,602        (115,602      $ 20.63      

Options exercised

     —          (426,076      $ 7.27      
  

 

 

   

 

 

         

Balance at June 30, 2014

     1,332,139        2,330,960      $ 15,427       $ 11.52         6.8   
  

 

 

   

 

 

   

 

 

       

Exercisable at June 30, 2014

       1,558,279      $ 12,456       $ 10.86         5.7   
    

 

 

   

 

 

       
Weighted Average Assumptions of Incentive Stock Plans

The following are the weighted average assumptions used for each respective period where options were issued:

 

     Three Months Ended
June 30,
    Nine Months Ended
June 30,
 
     2013     2014     2013     2014  

Dividend yield

     0.0     0.0     0.0     0.0

Risk-free interest rate

     0.4     0.8     0.6     0.7

Volatility

     57.1     51.7     80.1     55.7

Expected life

     3.0 years        3.0 years        4.3 years        3.2 years