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Share-based Payment Arrangements
3 Months Ended
Mar. 31, 2012
Share-based Payment Arrangements [Abstract]  
Share-based Payment Arrangements
(2) Share-based Payment Arrangements

As of March 31, 2012, the Company had two employee equity incentive plans, the 2002 employee stock option and stock incentive plan (the "ESOSIP") and the 2011 equity incentive plan (the "2011 EIP"). The Company also has a stock compensation plan for members of its Board of Directors (the "Directors Stock Compensation Plan"). The ESOSIP, 2011 EIP and Directors Stock Compensation Plan are each referred to herein as a "Plan," and, collectively, as the "Plans." No further grants can be made under the ESOSIP. Amounts recognized in the financial statements with respect to these Plans are as follows (in thousands):

 

     Thirteen Weeks Ended  
     March 31,
2012
     March 26,
2011
 

Total cost of the Plans during the period

   $ 1,525       $ 1,205   

Amount of related income tax benefit recognized during the period

     953         305   
  

 

 

    

 

 

 

Net cost of the Plans during the period

   $ 572       $ 900   
  

 

 

    

 

 

 

Included in income tax benefits recognized in the thirteen weeks ended March 31, 2012 and March 26, 2011 were income tax benefits of $628,000 and $31,000, respectively, recognized on disqualifying dispositions of the Company's common stock by employees who obtained the stock through recent exercises of incentive stock options.

As of March 31, 2012, there were 118,959 shares of the Company's common stock reserved for issuance under the Directors' Stock Compensation Plan and 7,281,736 shares of the Company's common stock reserved for issuance in the aggregate under the ESOSIP and 2011 EIP.

Stock Options

The fair value of each option grant on its grant date was calculated using the Black-Scholes option pricing model with the following weighted average assumptions for grants made in the 2012 and 2011 thirteen-week periods:

 

     2012     2011  

Expected volatility

     34.0     35.0

Expected dividend yield

     0.420     0.450

Risk-free interest rate

     0.90     1.75

Expected lives (in years)

     4.0        4.0   

 

The Company utilizes historical data, including exercise patterns and employee departure behavior, in estimating the term that options will be outstanding. Expected volatility was based on historical volatility and other factors, such as expected changes in volatility arising from planned changes to the Company's business, if any. The risk-free interest rate was based on the yield of zero coupon U.S. Treasury bonds for terms that approximated the terms of the options granted. The weighted average grant date fair value of stock options granted during the thirteen-week periods ended March 31, 2012 and March 26, 2011 was $13.97 and $12.05, respectively.

The following table summarizes information regarding the Company's outstanding stock options under the Plans:

 

     Number of
Options
    Weighted
Average
Exercise
Price per
Share
     Weighted
Average
Remaining
Contractual
Term
(years)
     Aggregate
Intrinsic
Value
(000s)
 

Options outstanding at December 31, 2011

     2,326,776      $ 40.11         

Granted

     327,500      $ 51.99         

Exercised

     (817,040   $ 39.68         

Forfeited

     (4,500   $ 41.32         
  

 

 

         

Options outstanding at March 31, 2012

     1,832,736      $ 42.42         6.8       $ 28,048   
  

 

 

         

Options exercisable at March 31, 2012

     686,719      $ 40.33         4.9       $ 11,944   
  

 

 

         

The total intrinsic value of stock options exercised during the thirteen-week periods ended March 31, 2012 and March 26, 2011 was $11,933,000 and $410,000, respectively.

As of March 31, 2012, there was $11,430,000 of total unrecognized compensation cost related to non-vested stock options granted under the Plans. The unrecognized compensation cost related to these non-vested options is expected to be recognized over a weighted average period of 3.4 years.

Non-vested Restricted Stock

The fair value of each share of non-vested restricted stock issued under the Plans is based on the fair value of a share of the Company's common stock on the date of grant.

The following table summarizes information regarding the Company's non-vested restricted stock under the Plans:

 

     Number
of
Shares
    Weighted
Average

Grant
Date Fair
Value
 

Outstanding at December 31, 2011

     40,993      $ 42.03   

Vested

     (2,310   $ 39.10   
  

 

 

   

Outstanding at March 31, 2012

     38,683      $ 42.21   
  

 

 

   

As of March 31, 2012, there was $1,097,000 of total unrecognized compensation cost related to non-vested shares of restricted stock granted under the Plans. The unrecognized compensation cost related to these non-vested shares of restricted stock is expected to be recognized over a weighted average period of 2.3 years.

Restricted Stock Units

A restricted stock unit ("RSU") award issued under the 2011 EIP represents a contractual right to receive one share of the Company's common stock upon achievement of certain performance objectives. RSU awards typically have contractual lives of five years from the date of grant and requirements for continuous employment.

The Company has historically granted stock options and restricted stock as part of its equity incentive plans. On January 2, 2012, the Company granted 113,000 performance related stock awards in the form of RSUs to members of management. The number of RSUs that vest is determined annually, for each year in the five-year period from date of grant, by multiplying the number of RSUs granted by the sum of (a) the average of the percentage change (positive or negative) in operating income and diluted earnings per share as compared to operating income and diluted earnings per share reported in the Company's 2011 fiscal year, plus (b) 5%, rounded to the nearest whole number, less (c) the number of RSUs previously vested. No dividends are paid on RSUs and RSUs have no voting rights. The fair value of a RSU is determined based on the market value of the Company's common stock on the date of grant, discounted for lack of marketability for a minimum post-vesting holding requirement. The Company reports compensation expense over the life of the award based on an estimated number of shares that will vest over the life of the award, multiplied by the fair value of an RSU. The closing market price of a share of the Company's common stock on the grant date was $48.15 as reported on the NASDAQ Global Select Market and the discount rate used for RSU award grants during the thirteen-week period ended March 31, 2012 was 7%.

The Company recognized approximately $200,000 of share-based compensation expense related to RSU awards in the thirteen-week period ended March 31, 2012. As of March 31, 2012, there was $5.2 million of total unrecognized compensation cost related to RSU awards granted under the Plans with an expected average remaining life of approximately 4.8 years. The amount of future compensation expense to be recognized will be determined based on actual future operating results. As of March 31, 2012, 113,000 performance-related RSU awards were outstanding.