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Note 7. Equity Incentive Plan and Stock-based Compensation (Details) - Stock Option Activities (USD $)
In Thousands, except Share data, unless otherwise specified
|
12 Months Ended |
|
Dec. 28, 2014
|
Dec. 29, 2013
|
Dec. 30, 2012
|
Dec. 25, 2011
|
| Stock Option Activities [Abstract] |
|
|
|
|
| Shares, outstanding as of December |
4,692,165 |
6,542,929 |
6,641,892 |
4,295,794 |
| Exercise price, outstanding as of December |
$ 13.10 |
$ 13.03 |
$ 13.06 |
$ 14.97 |
| Contractual life, outstanding as of December |
3 years 178 days |
4 years 153 days |
5 years 124 days |
5 years 237 days |
| Value, outstanding as of December |
$ 100,944 |
$ 14,061 |
$ 15,228 |
|
| Shares, granted |
0 |
644,000 |
2,747,400 |
|
| Exercise price, granted |
|
$ 11.47 |
$ 10.04 |
|
| Shares, forfeited |
(300,123) |
(463,729) |
(269,073) |
|
| Exercise price, forfeited |
$ 15.37 |
$ 13.26 |
$ 13.91 |
|
| Shares, exercised |
(1,550,641) |
(279,234) |
(132,229) |
|
| Exercise price, exercised |
$ 19.73 |
$ 9.65 |
$ 10.48 |
|
| Value, exercised |
11,326 |
688 |
262 |
|
| Exercisable as of December 28, 2014 |
4,303,175 |
|
|
|
| Exercisable as of December 28, 2014 |
$ 13.27 |
|
|
|
| Exercisable as of December 28, 2014 |
3 years 131 days |
|
|
|
| Exercisable as of December 28, 2014 |
$ 91,814 |
|
|
|