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Stock-Based Compensation (Tables)
 12 Months Ended
Jan. 02, 2016
Stock-Based Compensation  
Schedule of assumptions used to estimate fair values using Black-Scholes option-pricing model for Employee Stock Purchase Plan

 

 

 
   Year Ended  
2009 Employee Stock Purchase Plan
  January 2,
2016		   January 3,
2015		   December 28,
2013		  

Expected volatility

     31 %   28 %   27 %

Risk-free interest rate %

     0.2 %   0.2 %   0.1 %

Expected term (in months)

     8     15     7  

Dividend yield

     —     —     —  
Schedule of assumptions used to estimate fair values using Monte Carlo simulation model for Stock Incentive Plan

 

 

 
   Year Ended  
2009 Stock Incentive Plan
  January 2,
2016		   January 3,
2015		   December 28,
2013		  

Expected volatility

     31 %   33 %   32 %

Risk-free interest rate %

     1.0 %   0.7 %   0.5 %

Expected term (in years)

     2.9     2.8     2.9  

Dividend yield

     —     —     —  
Summary of Stock Options activity

 

 

Stock Options
  Shares
(000s)		   Weighted-
Average
Exercise
Price		   Weighted-Average
Remaining
Contractual Term
(In Years)		   Aggregate
Intrinsic
Value
(000s)		  

Outstanding at January 3, 2015

     529   $ 31.50              

Exercised

     (306 ) $ 29.14              

Cancelled or expired

     (11 ) $ 36.91              
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Outstanding at January 2, 2016

     212   $ 34.64     1.19   $ 3,119  

Vested at January 2, 2016 and expected to vest

    
212		  
$
34.64		    
1.19		  
$
3,119		  

Exercisable at January 2, 2016

    
212		  
$
34.64		    
1.19		  
$
3,119		  
Summary of RSAs and RSUs Activity


 

RSAs and RSUs
  Shares
(000s)		   Weighted-
Average
Purchase
Price		   Weighted-Average
Remaining
Vesting Term
(In Years)		   Aggregate
Intrinsic
Value
(000s)		  

Outstanding at January 3, 2015

     1,781   $ —              

Granted

     806   $ —              

Vested or issued

     (905 ) $ —              

Cancelled or forfeited

     (128 ) $ —              
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Outstanding at January 2, 2016

     1,554   $ —     0.91   $ 75,417  

Outstanding at January 2, 2016 and expected to vest

    
1,450		  
$
—		    
0.91		  
$
70,365		  
Summary of MSUs Activity

 

MSUs
  Shares
(000s)		   Weighted-
Average
Purchase
Price		   Weighted-Average
Remaining
Vesting Term
(In Years)		   Aggregate
Intrinsic
Value
(000s)		  

Outstanding at January 3, 2015

     298   $ —              

Granted

     89   $ —              

Earned or issued

     (7 ) $ —              

Cancelled or forfeited

     (130 ) $ —              
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

Outstanding at January 2, 2016

     250   $ —     1.09   $ 12,122  

Outstanding at January 2, 2016 and expected to vest

    
231		  
$
—		    
1.09		  
$
11,215		  
Summary of weighted average fair value at the date of grant

 

 

 
   Year Ended  
 
   January 2,
2016		   January 3,
2015		   December 28,
2013		  

Per grant of RSAs and RSUs

   $ 49.14   $ 47.93   $ 43.01  

Per grant of MSUs

   $ 48.36   $ 60.08   $ 31.94  
Summary of stock-based payment and stock option values

        The following summarizes the Company's stock-based payment and stock option values (in thousands):

 
   Year Ended  
 
   January 2,
2016		   January 3,
2015		   December 28,
2013		  

Intrinsic value of stock options exercised

   $ 6,612   $ 5,674   $ 4,198  

Intrinsic value of RSAs and RSUs that vested

   $ 45,298   $ 32,138   $ 23,649  

Grant date fair value of RSAs and RSUs that vested

   $ 41,072   $ 29,668   $ 24,026  
Schedule of stock-based compensation costs recognized in the Consolidated Statements of Income

 

        The following table presents details of stock-based compensation costs recognized in the Consolidated Statements of Income (in thousands):

 
   Year Ended  
 
   January 2,
2016		   January 3,
2015		   December 28,
2013		  

Cost of revenues

   $ 960   $ 775   $ 952  

Research and development

     19,451     18,521     14,530  

Selling, general and administrative

     22,380     19,771     15,318  
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

 

     42,791     39,067     30,800  

Income tax benefit

     9,264     4,024     2,633  
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

 

   $ 33,527   $ 35,043   $ 28,167  
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
Summary of shares reserved of common stock for future issuance

 

        As of January 2, 2016, the Company had reserved shares of common stock for future issuance as follows (in thousands):

2000 Stock Incentive Plan

     212  

2009 Stock Incentive Plan

     2,991  

2009 Employee Stock Purchase Plan

     671  
​ ​ ​ ​ ​

Total shares reserved

     3,874  
​ ​ ​ ​ ​
​ ​ ​ ​ ​
​ ​ ​ ​ ​