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Share-Based Compensation
3 Months Ended
Apr. 30, 2017
Share-based Compensation [Abstract]  
Share-Based Compensation
Share-Based Compensation
Financial Statement Effects and Presentation. The following table summarizes pre-tax share-based compensation included in the Statements of Income for the three months ended April 30, 2017 and May 1, 2016.
 
Three Months Ended
(in thousands)
April 30, 2017
 
May 1, 2016
Revenue offset
$
5,280

 
$

Cost of sales
564

 
377

Selling, general and administrative
5,557

 
3,853

Product development and engineering
1,885

 
1,477

Share-based compensation
$
13,286

 
$
5,707

Net change in share-based compensation capitalized into inventory
$
(414
)
 
$
(5
)

Market Performance-Based Restricted Stock Units. The Company grants performance-based restricted stock units to select employees. In the first quarter of fiscal year 2018, the Company granted 215,857 performance-based restricted stock units that have a pre-defined market condition, a service condition and are accounted for as equity awards. The market condition is determined based upon the Company’s total stockholder return (“TSR”) benchmarked against the TSR of the S&P SPDR Semiconductor ETF (NYSE:XSD) over a one, two and three year performance period (one-third of the awards vesting each performance period). The fiscal year 2018 award recipients must be employed for the entire performance period and be an active employee at the time of vesting of the awards. The Company used a Monte-Carlo simulation to determine the grant-date fair value for these awards, which takes into consideration the possible outcomes pertaining to the TSR market condition. The grant-date fair value per unit of the awards granted in the first quarter of fiscal year 2018 for each one, two and three year performance period is $38.01, $39.76 and $40.89, respectively. At April 30, 2017, the market metrics associated with the outstanding awards issued in fiscal year 2018 is expected to be met at a level which would result in a grant at 99% of target.

The performance-based restricted stock units are valued as of the measurement date and expense is recognized on a straight line basis for the awards expected to vest based on the probability of attainment of the performance condition for each separately vesting portion of the award.