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Stock Options Plans and Stock-Based Compensation (Tables) | 12 Months Ended
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Jan. 02, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Activities relating to restricted stock awards | The table below summarizes activity relating to restricted stock units:
| Number of Shares Underlying Restricted Stock |  | Weighted Average Grant Date Fair Value
Outstanding at December 29, 2012 | 941,030 |  |  | $ | 24.09 |
Granted | 521,056 |  |  | 25.87 |
Vested | (348,141 | ) |  | 22.57 |
Forfeited | (186,291 | ) |  | 24.91 |
Outstanding at December 28, 2013 | 927,654 |  |  | $ | 25.50 |
Granted | 372,159 |  |  | 38.25 |
Vested | (318,367 | ) |  | 25.38 |
Forfeited | (71,591 | ) |  | 28.42 |
Outstanding at December 27, 2014 | 909,855 |  |  | $ | 30.53 |
Granted | 576,410 |  |  | 32.33 |
Vested | (340,754 | ) |  | 29.13 |
Forfeited | (121,142 | ) |  | 31.49 |
Outstanding at January 2, 2016 | 1,024,369 |  |  | $ | 31.90 |
Summary of stock option plan activity | The table below summarizes stock option plan activity:
| Number of Shares |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Term |  | Aggregate Intrinsic Value(1)
Outstanding at December 29, 2012 | 2,503,667 |  |  | $ | 18.27 |  |  |  |  |
Granted | 293,325 |  |  | 24.60 |  |  |  |  |
Exercised | (840,951 | ) |  | 16.21 |  |  |  |  |
Canceled | (185,666 | ) |  | 22.16 |  |  |  |  |
Outstanding at December 28, 2013 | 1,770,375 |  |  | $ | 19.89 |  |  |  |  |
Granted | 233,181 |  |  | 37.10 |  |  |  |  |
Exercised | (486,252 | ) |  | 18.39 |  |  |  |  |
Canceled | (43,984 | ) |  | 27.17 |  |  |  |  |
Outstanding at December 27, 2014 | 1,473,320 |  |  | $ | 22.89 |  |  |  |  |
Granted | 323,104 |  |  | 32.58 |  |  |  |  |
Exercised | (390,085 | ) |  | 16.57 |  |  |  |  |
Canceled | (118,789 | ) |  | 28.41 |  |  |  |  |
Outstanding at January 2, 2016 | 1,287,550 |  |  | $ | 26.73 |  |  | 4.00 years |  | $11.6 million
Vested and expected to vest at January 2, 2016 | 1,230,537 |  |  | $ | 26.45 |  |  | 3.90 years |  | $11.4 million
Exercisable as of January 2, 2016 | 768,184 |  |  | $ | 23.18 |  |  | 2.74 years |  | $9.6 million
Weighted average fair value of options granted during the fiscal year ended January 2, 2016 |  |  | $ | 13.21 |  |  |  |  |
Options available for future grant at January 2, 2016 | 2,484,296 |  |  |  |  |  |  |
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(1) | The aggregate intrinsic value on the table was calculated based upon the positive difference between the closing market value of the Company’s stock on January 2, 2016 of $35.40 and the exercise price of the underlying option.
Summary of information about stock options outstanding | The following table summarizes information about stock options outstanding at January 2, 2016:
|  | Options Outstanding |  | Options Exercisable
Range of Exercise Prices |  | Number Outstanding |  | Weighted Average Remaining Contractual Life |  | Weighted Average Exercise Price | Number Exercisable |  | Weighted Average Exercise Price
$ 3.54 - $ 13.46 |  | 81,723 |  |  | 2.88 years |  | $ | 7.97 |  |  | 78,713 |  |  | $ | 8.09 |
14.52 - 14.52 |  | 144,017 |  |  | 1.25 |  | 14.52 |  |  | 144,017 |  |  | 14.52 |
17.70 - 21.23 |  | 82,171 |  |  | 1.61 |  | 18.44 |  |  | 73,194 |  |  | 18.41 |
22.86 - 22.86 |  | 166,757 |  |  | 4.10 |  | 22.86 |  |  | 112,252 |  |  | 22.86 |
24.53 - 26.59 |  | 167,468 |  |  | 2.85 |  | 25.75 |  |  | 153,635 |  |  | 25.71 |
29.60 - 32.38 |  | 162,225 |  |  | 6.51 |  | 31.04 |  |  | 1,500 |  |  | 31.22 |
33.29 - 33.48 |  | 159,940 |  |  | 3.27 |  | 33.42 |  |  | 125,453 |  |  | 33.46 |
33.72 - 34.30 |  | 168,599 |  |  | 6.24 |  | 34.13 |  |  | 12,671 |  |  | 33.72 |
34.67 - 37.08 |  | 107,648 |  |  | 5.34 |  | 35.83 |  |  | 44,991 |  |  | 35.66 |
43.35 - 43.35 |  | 47,002 |  |  | 4.95 |  | 43.35 |  |  | 21,758 |  |  | 43.35 |
$ 3.54 - $43.35 |  | 1,287,550 |  |  | 4.00 years |  | $ | 26.73 |  |  | 768,184 |  |  | $ | 23.18 |
Activities relating to restricted stock units | The table below summarizes activity relating to restricted stock units:
| Number of Shares Underlying Restricted Stock |  | Weighted Average Grant Date Fair Value
Outstanding at December 29, 2012 | 941,030 |  |  | $ | 24.09 |
Granted | 521,056 |  |  | 25.87 |
Vested | (348,141 | ) |  | 22.57 |
Forfeited | (186,291 | ) |  | 24.91 |
Outstanding at December 28, 2013 | 927,654 |  |  | $ | 25.50 |
Granted | 372,159 |  |  | 38.25 |
Vested | (318,367 | ) |  | 25.38 |
Forfeited | (71,591 | ) |  | 28.42 |
Outstanding at December 27, 2014 | 909,855 |  |  | $ | 30.53 |
Granted | 576,410 |  |  | 32.33 |
Vested | (340,754 | ) |  | 29.13 |
Forfeited | (121,142 | ) |  | 31.49 |
Outstanding at January 2, 2016 | 1,024,369 |  |  | $ | 31.90 |

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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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