|
Note 7. Equity Incentive Plan and Stock-based Compensation (Tables)
|
12 Months Ended |
|
Dec. 28, 2014
|
| Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
|
| Schedule Of Shares Available For Grant [Table Text Block] |
|
|
|
Shares Available For Grant
|
|
|
Shares available for grant under the 2010 Plan as of December 25, 2011
|
|
|
2,150,354
|
|
|
Annual increase for 2012 under the 2010 Plan
|
|
|
3,560,245
|
|
|
Stock options granted through December 30, 2012, net of forfeitures
|
|
|
(2,478,327
|
)
|
|
RSU awards granted through December 30, 2012, net of forfeitures
|
|
|
(1,028,600
|
)
|
|
Key executive RSU awards granted through December 30, 2012 net of forfeitures
|
|
|
(1,100,222
|
)
|
|
Shares available for grant under the 2010 Plan as of December 30, 2012
|
|
|
1,103,450
|
|
|
Annual increase for 2013 under the 2010 Plan
|
|
|
2,577,033
|
|
|
Stock options granted through December 29, 2013, net of forfeitures
|
|
|
(180,271
|
)
|
|
RSU awards granted through December 29, 2013, net of forfeitures
|
|
|
(824,644
|
)
|
|
Key executive RSU awards forfeited through December 29, 2013
|
|
|
36,836
|
|
|
PSU awards granted through December 29, 2013 net of forfeitures
|
|
|
(362,000
|
)
|
|
Shares available for grant under the 2010 Plan as of December 29, 2013
|
|
|
2,350,404
|
|
|
Annual increase for 2014 under the 2010 Plan
|
|
|
2,069,902
|
|
|
Stock options forfeited / cancelled through December 28, 2014
|
|
|
300,123
|
|
|
RSU awards granted through December 28, 2014, net of forfeitures
|
|
|
(1,444,520
|
)
|
|
Key executive RSU awards forfeited through December 28, 2014
|
|
|
357,870
|
|
|
PSU awards granted through December 28, 2014 net of forfeitures (1)
|
|
|
(870,804
|
)
|
|
Shares available for grant under the 2010 Plan as of December 28, 2014
|
|
|
2,762,975
|
|
|
| Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] |
|
|
|
Year Ended
|
|
|
|
|
December 28,
|
|
|
December 29,
|
|
|
December 30,
|
|
|
|
|
2014
|
|
|
2013
|
|
|
2012
|
|
|
|
|
(in thousands)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Cost of sales
|
|
$
|
7,961
|
|
|
$
|
5,900
|
|
|
$
|
6,790
|
|
|
Research and development
|
|
|
10,604
|
|
|
|
9,340
|
|
|
|
8,696
|
|
|
Sales, general and administrative
|
|
|
21,701
|
|
|
|
15,447
|
|
|
|
18,877
|
|
|
Stock-based compensation expense after income taxes (1)
|
|
$
|
40,266
|
|
|
$
|
30,687
|
|
|
$
|
34,363
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value [Table Text Block] |
|
|
|
Year Ended
|
|
|
|
|
December 29, 2013
|
|
|
December 30, 2012
|
|
|
|
|
|
|
|
|
|
|
|
|
Weighted average fair value of stock options granted
|
|
$
|
4.68
|
|
|
$
|
4.20
|
|
|
| Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
|
|
|
Year Ended
|
|
|
|
|
December 29, 2013
|
|
|
December 30, 2012
|
|
|
|
|
|
|
|
|
|
|
|
|
Expected volatility
|
|
|
46.19%
|
|
|
|
50.84%
|
|
|
Risk-free interest rate
|
|
|
1.02%
|
|
|
|
0.64%
|
|
|
Expected term (in years)
|
|
|
4.35
|
|
|
|
4.35
|
|
|
Dividend yield
|
|
|
0.00%
|
|
|
|
0.00%
|
|
|
|
|
Year Ended
|
|
|
|
|
December 28, 2014
|
|
|
|
|
|
|
|
|
Expected volatility
|
|
|
30.76
|
%
|
|
Risk-free interest rate
|
|
|
0.04
|
%
|
|
Expected term (in years)
|
|
|
0.50
|
|
|
Dividend yield
|
|
|
0.00
|
%
|
|
| Fair Value Assumptions Used To Value PSU Awards Granted [Table Text Block] |
|
|
|
Year Ended
|
|
|
|
|
December 28, 2014
|
|
|
December 29, 2013
|
|
|
|
|
|
|
|
|
|
|
|
|
Range of Stock price on grant date
|
|
$
|
17.94 - $21.08
|
|
|
$
|
11.50
|
|
|
Expected volatility
|
|
|
42.79
|
%
|
|
|
50.90
|
%
|
|
Risk-free interest rate
|
|
|
0.73
|
%
|
|
|
0.21
|
%
|
|
Dividend yield
|
|
|
0.00
|
%
|
|
|
0.00
|
%
|
|
| Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block] |
|
|
|
Unrecognized stock-based compensation as of December 28, 2014
|
|
|
Weighted-Average Amortization period
|
|
|
|
|
(In thousands)
|
|
|
(In years)
|
|
|
Stock Option
|
|
$
|
1,412
|
|
|
|
0.91
|
|
|
RSUs
|
|
|
18,099
|
|
|
|
1.05
|
|
|
PSUs and Key executive RSUs
|
|
|
13,442
|
|
|
|
0.99
|
|
|
ESPP
|
|
|
219
|
|
|
|
0.1
|
|
|
Total unrecognized stock-based compensation balance, net of estimated forfeitures
|
|
$
|
33,172
|
|
|
|
1.01
|
|
|
| Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
|
|
|
|
|
|
|
Weighted-
|
|
|
Average
|
|
|
Aggregate
|
|
|
|
|
|
|
|
|
Average
|
|
|
Remaining
|
|
|
Intrinsic
|
|
|
|
|
Number of
|
|
|
Exercise
|
|
|
Contractual Life
|
|
|
Value
|
|
|
|
|
Shares
|
|
|
Price
|
|
|
(in years)
|
|
|
(in thousands)
|
|
|
Outstanding as of December 25, 2011
|
|
|
4,295,794
|
|
|
$
|
14.97
|
|
|
|
5.65
|
|
|
$
|
-
|
|
|
Granted
|
|
|
2,747,400
|
|
|
$
|
10.04
|
|
|
|
|
|
|
|
|
|
|
Forfeited
|
|
|
(269,073
|
)
|
|
$
|
13.91
|
|
|
|
|
|
|
|
|
|
|
Exercised
|
|
|
(132,229
|
)
|
|
$
|
10.48
|
|
|
|
|
|
|
$
|
262
|
|
|
Outstanding as of December 30, 2012
|
|
|
6,641,892
|
|
|
$
|
13.06
|
|
|
|
5.34
|
|
|
$
|
15,228
|
|
|
Granted
|
|
|
644,000
|
|
|
$
|
11.47
|
|
|
|
|
|
|
|
|
|
|
Forfeited
|
|
|
(463,729
|
)
|
|
$
|
13.26
|
|
|
|
|
|
|
|
|
|
|
Exercised
|
|
|
(279,234
|
)
|
|
$
|
9.65
|
|
|
|
|
|
|
$
|
688
|
|
|
Outstanding as of December 29, 2013
|
|
|
6,542,929
|
|
|
$
|
13.03
|
|
|
|
4.42
|
|
|
$
|
14,061
|
|
|
Granted
|
|
|
-
|
|
|
$
|
-
|
|
|
|
|
|
|
|
|
|
|
Forfeited
|
|
|
(300,123
|
)
|
|
$
|
15.37
|
|
|
|
|
|
|
|
|
|
|
Exercised
|
|
|
(1,550,641
|
)
|
|
$
|
19.73
|
|
|
|
|
|
|
$
|
11,326
|
|
|
Outstanding as of December 28, 2014
|
|
|
4,692,165
|
|
|
$
|
13.10
|
|
|
|
3.49
|
|
|
$
|
100,944
|
|
|
Exercisable as of December 28, 2014
|
|
|
4,303,175
|
|
|
$
|
13.27
|
|
|
|
3.36
|
|
|
$
|
91,814
|
|
|
| Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] |
|
|
|
Shares
|
|
|
Weighted-Average
Grant-date
Fair Value
|
|
|
Unvested as of December 25, 2011
|
|
|
2,143,035
|
|
|
$
|
14.94
|
|
|
Granted
|
|
|
1,328,143
|
|
|
$
|
10.37
|
|
|
Forfeited
|
|
|
(299,543
|
)
|
|
$
|
13.37
|
|
|
Vested
|
|
|
(652,719
|
)
|
|
$
|
11.10
|
|
|
Unvested as of December 30, 2012
|
|
|
2,518,916
|
|
|
$
|
13.72
|
|
|
Granted
|
|
|
1,137,388
|
|
|
$
|
12.33
|
|
|
Forfeited
|
|
|
(312,744
|
)
|
|
$
|
12.70
|
|
|
Vested
|
|
|
(958,848
|
)
|
|
$
|
11.67
|
|
|
Unvested as of December 29, 2013
|
|
|
2,384,712
|
|
|
$
|
14.01
|
|
|
Granted
|
|
|
1,568,509
|
|
|
$
|
16.19
|
|
|
Forfeited
|
|
|
(123,989
|
)
|
|
$
|
13.25
|
|
|
Vested
|
|
|
(1,789,045
|
)
|
|
$
|
13.49
|
|
|
Unvested as of December 28, 2014
|
|
|
2,040,187
|
|
|
$
|
16.19
|
|
|
| Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block] |
|
|
|
Key Executive RSUs
|
|
|
PSUs
|
|
|
|
|
|
|
|
|
Weighted-Average
|
|
|
|
|
|
|
Weighted-Average
|
|
|
|
|
Number of
|
|
|
Grant-date
|
|
|
Number of
|
|
|
Grant-date
|
|
|
|
|
Shares
|
|
|
Fair Value
|
|
|
Shares
|
|
|
Fair Value
|
|
|
Unvested as of December 25, 2011
|
|
|
969,956
|
|
|
$
|
13.71
|
|
|
|
-
|
|
|
$
|
-
|
|
|
Granted
|
|
|
1,100,222
|
|
|
$
|
10.04
|
|
|
|
-
|
|
|
$
|
-
|
|
|
Forfeited
|
|
|
-
|
|
|
$
|
-
|
|
|
|
-
|
|
|
$
|
-
|
|
|
Vested
|
|
|
(278,007
|
)
|
|
$
|
10.06
|
|
|
|
-
|
|
|
$
|
-
|
|
|
Unvested as of December 30, 2012
|
|
|
1,792,171
|
|
|
$
|
12.02
|
|
|
|
-
|
|
|
$
|
-
|
|
|
Granted
|
|
|
-
|
|
|
$
|
-
|
|
|
|
406,000
|
|
|
$
|
7.38
|
|
|
Forfeited
|
|
|
(36,836
|
)
|
|
$
|
12.53
|
|
|
|
(44,000
|
)
|
|
$
|
7.40
|
|
|
Vested
|
|
|
(781,049
|
)
|
|
$
|
11.52
|
|
|
|
-
|
|
|
$
|
-
|
|
|
Unvested as of December 29, 2013
|
|
|
974,286
|
|
|
$
|
12.40
|
|
|
|
362,000
|
|
|
$
|
7.38
|
|
|
Granted
|
|
|
-
|
|
|
$
|
-
|
|
|
|
888,804
|
|
|
$
|
20.34
|
|
|
Forfeited
|
|
|
(357,870
|
)
|
|
$
|
11.03
|
|
|
|
(18,000
|
)
|
|
$
|
7.40
|
|
|
Vested
|
|
|
(318,781
|
)
|
|
$
|
11.37
|
|
|
|
(172,000
|
)
|
|
$
|
7.40
|
|
|
Unvested as of December 28 2014
|
|
|
297,635
|
|
|
$
|
15.15
|
|
|
|
1,060,804
|
|
|
$
|
18.23
|
|
|