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Stock Plans
12 Months Ended
Dec. 31, 2011
Stock Plans [Abstract]  
Stock Plans

Note 8—Stock Plans

The 2008 Management Equity Incentive Plan provides for various forms of stock-based compensation for eligible key employees through May 2018. Management stock-based compensation includes stock options, restricted stock and performance stock units. The 2008 Non-Employee Directors' Equity Incentive Plan provides for grants of stock options and restricted stock to non-employee directors through May 2018. Stock options are granted at market value option prices and expire after ten years. Stock options are exercisable beginning three years after the grant date. Restricted stock is granted without payment to the company and generally vests three years after the grant date. Unvested stock options, restricted stock and performance stock units are forfeited if the grantee's employment with the company terminates for any reason other than retirement, death or disability. Certain restricted stock for management retention vests in three equal tranches four, five and six years after the grant date. Unvested restricted stock for management retention is forfeited if the grantee's employment with the company terminates for any reason other than death or disability. Restricted stock and performance stock units are valued at the market value of the stock on the grant date. The final number of shares to be issued for performance stock units may range from zero to 200% of the target award based on achieving targeted performance conditions over a three year performance period. We issue Stock Compensation Trust shares or new shares for stock option exercises and grants of restricted stock and performance stock. As of December 31, 2011, there were 355,002 and 236,489 shares, respectively, reserved for future grants under the management and non-employee directors' equity incentive plans.

Stock-based compensation expense was as follows:

 

(In thousands)

   2011      2010      2009  

Restricted stock

   $ 4,370       $ 4,063       $ 3,027   

Stock options

     2,343         2,748         2,465   

Performance stock

     1,019         524         368   
  

 

 

    

 

 

    

 

 

 

Total compensation expense before income taxes

     7,732         7,335         5,860   

Income tax benefit

     2,825         2,653         2,084   
  

 

 

    

 

 

    

 

 

 

Total compensation expense, net of income tax benefit

     4,907         4,682         3,776   
  

 

 

    

 

 

    

 

 

 

We did not capitalize any stock-based compensation expense in 2011, 2010, or 2009.

Stock option expense is based on the fair value of stock option grants estimated on the grant dates using the Black-Scholes option pricing model and the following weighted average assumptions for options granted in 2011, 2010 and 2009.

 

     2011     2010     2009  

Fair value per option

   $ 9.94      $ 7.21      $ 5.80   

Risk-free interest rate

     2.6     3.0     2.2

Expected dividend yield

     3.6     3.9     3.0

Expected volatility

     40     40     42

Expected life (years)

     6.1        6.1        6.1   

 

The risk-free interest rate is based on the U.S. Treasury Constant Maturity rates as of the grant date converted into an implied spot rate yield curve. Expected dividend yield is based on the most recent annualized dividend divided by the one year average closing share price. Expected volatility is based on the ten year historical volatility using daily stock prices. Expected life is based on historical stock option exercise data.

A summary of option activity follows:

 

     Shares     Weighted
Average
Exercise Price
     Exercisable at
Year-end
 

Outstanding January 1, 2009

     1,706,439      $ 26.65         1,229,907   

Granted

     438,110        18.17      

Exercised

     (25,566     10.00      

Forfeited

     (33,908     30.16      
  

 

 

   

 

 

    

Outstanding December 31, 2009

     2,085,075        25.01         1,323,549   

Granted

     323,978        25.06      

Exercised

     (650,565     12.00      

Expired

     (9,485     46.73      
  

 

 

   

 

 

    

Outstanding December 31, 2010

     1,749,003        29.74         791,759   

Granted

     166,247        34.09      

Exercised

     (94,115     13.99      

Expired

     (2,495     44.08      
  

 

 

   

 

 

    

Outstanding December 31, 2011

     1,818,640        30.94         907,598   
  

 

 

   

 

 

    

For various exercise price ranges, characteristics of outstanding and exercisable stock options at December 31, 2011 were as follows:

 

Cash received from the exercise of stock options was $1.3 million, $7.8 million and $0.3 million for the years ended December 31, 2011, 2010 and 2009, respectively. The tax benefit we realized from these exercises was $0.7 million, $4.3 million and $0.1 million for the years ended December 31, 2011, 2010 and 2009, respectively.

The aggregate intrinsic value of stock options exercisable at December 31, 2011 was zero because a significant number of the options were out-of-the money. The aggregate intrinsic value of all stock options outstanding at December 31, 2011 was $4.0 million.

 

A summary of restricted stock activity follows:

 

     Shares     Weighted
Average
Grant
Date Fair
Value
 

Unvested at January 1, 2009

     189,062      $ 42.56   

Granted

     197,464        18.25   

Vested

     (39,319     40.57   

Forfeited

     (9,001     27.64   
  

 

 

   

 

 

 

Unvested at December 31, 2009

     338,206        28.99   

Granted

     185,216        25.38   

Vested

     (46,125     39.88   

Forfeited

     (3,660     23.93   
  

 

 

   

 

 

 

Unvested at December 31, 2010

     473,637        26.56   

Granted

     125,603        33.61   

Vested

     (76,505     44.39   

Forfeited

     (10,481     24.87   
  

 

 

   

 

 

 

Unvested at December 31, 2011

     512,254        25.66   
  

 

 

   

 

 

 

A summary of performance stock unit activity follows:

 

     Shares     Weighted
Average
Grant
Date Fair
Value
 

Granted

     64,780      $ 17.83   

Forfeited

     (2,806     17.83   
  

 

 

   

 

 

 

Unvested at December 31, 2009

     61,974        17.83   

Granted

     41,984        24.63   

Performance adjustments

     (18,329     20.75   
  

 

 

   

 

 

 

Unvested at December 31, 2010

     85,629        20.53   

Granted

     48,820        33.09   

Performance adjustments

     (7,506     21.14   

Forfeited

     (1,500     30.53   
  

 

 

   

 

 

 

Unvested at December 31, 2011

     125,443        25.27   
  

 

 

   

 

 

 

During the years ended December 31, 2011, 2010 and 2009, the total intrinsic value of stock options exercised (the difference between the market price on the date of exercise and the option price paid to exercise the option) was $1.8 million, $10.9 million and $0.4 million, respectively. The fair values of restricted stock vested during the years ended December 31, 2011, 2010, and 2009 were $3.4 million, $1.2 million and $0.7 million, respectively.

On December 31, 2011, there was $6.3 million of unrecognized stock-based compensation expense. The weighted average period over which this expense is expected to be recognized was approximately one year.