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Stock-Based Compensation Plans (Tables)
 12 Months Ended
Mar. 28, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock-Based compensation expense
The following table summarizes stock-based compensation expense related to stock awards granted under the Company’s equity incentive plans and rights to acquire stock granted under the Company’s ESPP:
(In thousands)
March 28, 2015
 
March 29, 2014
 
March 30, 2013
Stock-based compensation included in:

 

 

Cost of revenues
$
8,101

 
$
7,602

 
$
6,356

Research and development
50,185

 
46,197

 
37,937

Selling, general and administrative
40,994

 
40,515

 
33,569

Restructuring charges
579

 
—

 
—

Stock-based compensation effect on income before taxes
99,859

 
94,314

 
77,862

Income tax effect
(29,268
)
 
(27,327
)
 
(22,137
)
Net stock-based compensation effect on net income
$
70,591

 
$
66,987

 
$
55,725
Employee stock purchase plan, valuation assumptions
These fair values per share were estimated at the date of grant using the following weighted-average assumptions:
 
 
Employee Stock Purchase Plan
 
2015
 
2014
 
2013
Expected life of options (years)
1.3

 
1.3

 
1.3

Expected stock price volatility
0.25

 
0.24

 
0.26

Risk-free interest rate
0.3
%
 
0.2
%
 
0.2
%
Dividend yield
2.9
%
 
2.4
%
 
2.7
%
Summary of restricted stock unit activity and related information
The per share weighted-average fair value of RSUs granted during fiscal 2015, 2014 and 2013 were $43.11, $38.90 and $31.58, respectively. The weighted average fair value of RSUs granted in fiscal 2015, 2014 and 2013 were calculated based on estimates at the date of grant using the following weighted-average assumptions: 

2015
 
2014
 
2013
Risk-free interest rate
0.8
%
 
0.7
%
 
0.4
%
Dividend yield
2.5
%
 
2.5
%
 
2.7
%
Stock options, vested and expected to vest, outstanding
Options outstanding that have vested and are expected to vest in future periods as of March 28, 2015 are as follows:
(Shares and intrinsic value in thousands)
 
Number of Shares
 
Weighted-Average Exercise Price Per Share
 
Weighted-Average Remaining Contractual Term (Years)
 
Aggregate Intrinsic Value (1)
Vested (i.e., exercisable)
 
3,173

 
$24.59
 
1.51
 
$
56,276

Expected to vest
 
70

 
$34.32
 
3.83
 
$
561

Total vested and expected to vest
 
3,243

 
$24.80
 
1.56
 
$
56,837


 

 

 

 

Total outstanding
 
3,247

 
$24.81
 
1.57
 
$
56,873



(1)
These amounts represent the difference between the exercise price and $42.32, the closing price per share of Xilinx’s stock on March 28, 2015, for all in-the-money options outstanding.
Shares available for grant under stock option plan
A summary of shares available for grant under the 2007 Equity Plan is as follows:
(Shares in thousands)
 
Shares Available for Grant
March 31, 2012
 
14,908

Additional shares reserved
 
3,500

Stocks options granted
 
(92
)
Stock options cancelled
 
209

RSUs granted
 
(3,018
)
RSUs cancelled
 
483

March 30, 2013
 
15,990

Additional shares reserved
 
2,000

Stocks options granted
 
(8
)
Stock options cancelled
 
26

RSUs granted
 
(3,297
)
RSUs cancelled
 
326

March 29, 2014
 
15,037

Additional shares reserved
 
3,000

Stocks options granted
 
—

Stock options cancelled
 
6

RSUs granted
 
(3,201
)
RSUs cancelled
 
531

March 28, 2015
 
15,373
Stock options outstanding and exercisable under stock option plans, by exercise price range
The following information relates to options outstanding and exercisable under the Option Plans as of March 28, 2015:
 
 
Options Outstanding
 
Options Exercisable
 
 

 
Weighted-
 
Weighted-
 

 
Weighted-
(Shares in thousands)
 

 
Average
 
Average
 

 
Average
 
 

 
Remaining
 
Exercise
 

 
Exercise
 
 
Options
 
Contractual Term
 
Price Per
 
Options
 
Price Per
Range of Exercise Prices
 
Outstanding
 
(Years)
 
Share
 
Exercisable
 
Share
$15.95 - $19.79
 
74

 
0.98
 
$18.21
 
74

 
$15.95
$20.57 - $29.27
 
2,945

 
1.41
 
$24.27
 
2,944

 
$20.57
$30.21 - $38.56
 
227

 
3.73
 
$33.94
 
154

 
$30.21
$40.37 - $40.37
 
1

 
5.21
 
$40.37
 
1

 
$40.37
 
 
3,247

 
1.57
 
$24.81
 
3,173

 
$24.59
Employee Stock Option [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Summary of restricted stock unit activity and related information
A summary of the Company’s RSU activity and related information is as follows:
 
 
RSUs Outstanding
(Shares and intrinsic value in thousands)
Number of Shares

Weighted-Average Grant-Date Fair Value Per Share

Weighted Average Remaining Contractual Term (Years)

Aggregate Intrinsic Value (1)
March 31, 2012
5,239

 
$29.01
 
 
 
 
Granted
3,018

 
$31.58
 
 
 
 
Vested (2)
(1,778
)
 
$27.01
 
 
 
 
Cancelled
(483
)
 
$29.69
 
 
 
 
March 30, 2013
5,996

 
$30.83
 
 
 
 
Granted
3,297

 
$38.90
 
 
 
 
Vested (2)
(2,066
)
 
$29.25
 
 
 
 
Cancelled
(326
)
 
$32.28
 
 
 
 
March 29, 2014
6,901

 
$35.08
 
 
 
 
Granted
3,201

 
$43.11
 
 
 
 
Vested (2)
(2,698
)
 
$33.82
 
 
 
 
Cancelled
(531
)
 
$32.91
 
 
 
 
March 28, 2015
6,873

 
$39.07
 
2.29
 
$
291,021




 

 

 


Expected to vest as of March 28, 2015
5,814

 
$39.00
 
2.30
 
$
246,045


(1)
Aggregate intrinsic value for RSUs represents the closing price per share of Xilinx’s stock on March 28, 2015 of $42.32, multiplied by the number of RSUs outstanding or expected to vest as of March 28, 2015.
(2)
The number of RSUs vested includes shares that the Company withheld on behalf of employees to satisfy the statutory tax withholding requirements.
Summary of option plans activity
A summary of the Company’s Option Plans activity and related information is as follows:
 
 
Options Outstanding
(Shares in thousands)
Number of Shares
 
Weighted-Average Exercise Price Per Share
March 31, 2012
17,788

 
$28.32
Granted
92

 
$33.83
Exercised
(3,564
)
 
$24.68
Forfeited/cancelled/expired
(1,563
)
 
$39.54
March 30, 2013
12,753

 
$28.01
Granted
8

 
$41.08
Exercised
(7,421
)
 
$29.95
Forfeited/cancelled/expired
(60
)
 
$35.61
March 29, 2014
5,280

 
$25.22
Granted
—

 
—

Exercised
(2,009
)
 
$25.80
Forfeited/cancelled/expired
(24
)
 
$32.22
March 28, 2015
3,247

 
$24.81
Options exercisable at:

 

March 28, 2015
3,173

 
$24.59
March 29, 2014
4,935

 
$24.87