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Stock-Based Compensation (Tables)
9 Months Ended
Jun. 30, 2011
Stock-Based Compensation  
Schedule of Assumptions Used in Estimate of Fair Value of Stock Option Awards
                 
    Three-Months Ending   Nine-Months Ending
    June 30,   June 30,
    2011   2010   2011   2010
Expected term
  5.8 years   6.5 years   5.8– 8.7 years   6.5 years
Estimated volatility
  53.7%   51.0%   48.0% – 54.0%   51.0%
Estimated dividend yield
  1.0%   1.4%   1.0% – 1.3%   1.4%
Risk-free interest rate
  1.8%   2.4%   1.8% – 2.6%   3.4%
Forfeiture rate
  10.6%   10.8%   0% – 10.6%   8.1%
Activity for Stock Option Awards
                                 
    Three-Months Ending     Nine-Months Ending  
    June 30, 2011     June 30, 2011  
            Weighted-             Weighted-  
            Average             Average  
    Number of     Exercise Price     Number of     Exercise Price  
    options     per Share     options     per Share  
 
                               
Options, beginning balance
    4,418     $ 19.65       4,011     $ 16.87  
Options granted
    28       33.04       710       32.10  
Options exercised
    (49 )     15.74       (310 )     10.14  
Options expired unexercised
    (2 )     32.73       (2 )     32.73  
Options forfeited
    (6 )     26.68       (20 )     26.61  
 
                           
 
                               
Options, ending balance
    4,389     $ 19.76       4,389     $ 19.76