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Share Based Compensation
 9 Months Ended
Sep. 29, 2012
Share-based Compensation [Abstract]  
Share Based Compensation
Share-Based Compensation:

Share-based compensation includes stock options, restricted stock unit awards and certain transactions under our Employee Stock Purchase Plan (the “ESPP”).   Share-based compensation expense is recognized based on grant date fair value of all options and restricted stock unit awards plus a discount on shares purchased by employees as a part of the ESPP.  The discount under the ESPP represents the difference between the grant date market value and the employee’s purchase price.

There were no significant modifications to our share-based compensation plans during the fiscal nine months ended September 29, 2012.

For the third quarters of fiscal 2012 and 2011, share-based compensation expense was $4.7 million and $3.7 million, respectively, and $14.1 million and $10.7 million for the first nine months of fiscal 2012 and 2011, respectively.

Stock Options

The following summarizes information concerning stock option grants during each of the first nine months of fiscal 2012 and 2011:
 
Fiscal nine months ended
 
September 29,
2012
 
September 24,
2011
Stock options granted
570,277

 
545,455

Weighted average exercise price
$
85.54

 
$
52.13

Weighted average fair value per option
$
26.25

 
$
17.72



As of September 29, 2012, total unrecognized compensation expense related to non-vested stock options was approximately $14.4 million with a remaining weighted average expense recognition period of 1.4 years.

Restricted Stock Units

The following summarizes information concerning restricted stock unit grants during each of the first nine months of fiscal 2012 and 2011:
 
Fiscal nine months ended
 
September 29,
2012
 
September 24,
2011
Restricted stock units granted
40,017

 
63,484

Weighted average fair value per share
$
87.10

 
$
53.23



As of September 29, 2012, total unrecognized compensation expense related to non-vested restricted stock units was approximately $3.2 million with a remaining weighted average expense recognition period of 1.6 years.