XML 33 R32.htm IDEA: XBRL DOCUMENT v2.3.0.15
Note R - Stock-Based Compensation (Tables)
9 Months Ended
Sep. 30, 2011
Schedule of Share-based Compensation, Shares Authorized under Stock Plans, Issued and Avaliability [Table Text Block]
Common Stock authorized
    9,144,000  
         
Stock based awards, including restricted stock and stock options granted, net of expired or cancelled
    6,374,000  
         
Common Stock available for grant of stock-based awards as of September 30, 2011
    2,770,000  
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]
   
Three Months Ended
September 30,
   
Nine Months Ended
September 30,
 
   
2011
   
2010
   
2011
   
2010
 
Restricted stock
  $ 1,093     $ 1,110     $ 4,050     $ 3,440  
Stock options
    1,679       1,177       4,287       2,523  
Total
  $ 2,772     $ 2,287     $ 8,337     $ 5,963  
Schedule Of Cash Proceeds And Intrinsic Values For Stock Options Exercised [TableText Block]
   
Three Months Ended
September 30,
   
Nine Months Ended
September 30,
 
   
2011
   
2010
   
2011
   
2010
 
Proceeds from stock options exercised
  $ 520     $ 485     $ 4,005     $ 2,398  
Intrinsic value of stock options exercised
  $ 1,062     $ 808     $ 8,861     $ 5,422  
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Method Used
 
Nine Months Ended September 30,
 
2011
 
2010
       
Expected volatility
47.3% to 48.7%
 
47.2% to 52.4%
Risk-free interest rate
0.61% to 1.78%
 
1.08% to 2.16%
Expected life (in years)
2.8 to 4.4
 
2.8 to 4.4
Expected dividend yield
None
 
None
Weighted average fair value
$10.91
 
$8.45
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
   
Number of Shares
   
Weighted Average Exercise Price
   
Weighted Average Remaining Contractual Term
   
Aggregate Intrinsic Value
 
                             
Outstanding at January 1, 2011
    2,703,000     $ 14.08              
Granted
    582,000       29.80              
Exercised
    (357,000 )     11.21    
 
       
Cancelled/Forfeited
    (167,000 )     19.30          
 
 
                                 
Outstanding at September 30, 2011
    2,761,000     $ 17.45       4.8     $ 35,899  
                                 
Exercisable at September 30, 2011
    813,000     $ 14.25       4.2     $ 13,101  
Schedule of Nonvested Share Activity [Table Text Block]
   
2011
   
2010
 
   
Number of Shares
   
Weighted Average Fair Value at Grant Date
   
Number of Shares
   
Weighted Average Fair Value at Grant Date
 
                                 
Non-vested at January 1
    563,000     $ 17.20       671,000     $ 13.98  
Granted
    334,000       31.34       177,000       20.33  
Vested
    (179,000 )     14.93       (288,000 )     13.35  
Forfeited
                (15,000 )     18.99  
                                 
Non-vested at September 30
    718,000     $ 24.34       545,000     $ 14.67