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Share Based Compensation
 6 Months Ended
Jul. 01, 2017
Share-based Compensation [Abstract]  
Share Based Compensation
Share-Based Compensation:

Share-based compensation includes stock option and 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.

There were no significant modifications to the Company’s share-based compensation plans during the fiscal six months ended July 1, 2017.
For the second quarters of fiscal 2017 and 2016, share-based compensation expense was $7.5 million and $5.9 million, respectively, and $15.1 million and $11.2 million for the first six months of fiscal 2017 and 2016, respectively.

Stock Options

The following table summarizes information concerning stock option grants during the first six months of fiscal 2017 and 2016:
 
Fiscal six months ended
 
July 1,
2017
 
June 25,
2016
Stock options granted
1,557,681

 
1,119,304

Weighted average exercise price
$
72.76

 
$
86.34

Weighted average fair value per option
$
14.68

 
$
19.61



As of July 1, 2017, total unrecognized compensation expense related to non-vested stock options was approximately $30.8 million with a remaining weighted average expense recognition period of 2.0 years.

Restricted Stock Units

The following table summarizes information concerning restricted stock unit grants during the first six months of fiscal 2017 and 2016:
 
Fiscal six months ended
 
July 1,
2017
 
June 25,
2016
Restricted stock units granted
82,835

 
59,019

Weighted average fair value per share
$
66.70

 
$
84.25



As of July 1, 2017, total unrecognized compensation expense related to non-vested restricted stock units was approximately $7.3 million with a remaining weighted average expense recognition period of 1.7 years.