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Stock-Based Compensation (Tables) | 12 Months Ended
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Dec. 29, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Weighted average assumptions used in calculating fair value of stock options | The weighted average of key assumptions used in determining the fair value of options granted and a discussion of the methodology used to develop each assumption are as follows:
|  | 2018 |  | 2017 |  | 2016
Expected term |  | 7.6 years |  |  | 7.7 years |  |  | 6.7 years |
Expected price volatility |  | 27.2 | % |  | 28.9 | % |  | 25.6 | %
Risk-free interest rate |  | 2.9 | % |  | 2.1 | % |  | 1.6 | %
Dividend yield |  | 1.3 | % |  | 1.3 | % |  | 1.0 | %
Summary of the stock option activity | A summary of the activity and related information follows:
|  | Stock Options |  | Restricted Stock Awards
(Shares in thousands) |  | Shares |  | Weighted Average Exercise Price |  | Shares |  | Weighted Average Grant Date Fair Value
Outstanding at December 30, 2017 |  | 947 |  |  | $ | 22.31 |  |  | 781 |  |  | $ | 31.83 |
Granted |  | 142 |  |  | 31.33 |  |  | 276 |  |  | 32.04 |
Exercised/Released |  | (57 | ) |  | 15.10 |  |  | (124 | ) |  | 29.95 |
Forfeited |  | (18 | ) |  | 26.78 |  |  | (3 | ) |  | 32.60 |
Outstanding at December 29, 2018 |  | 1,014 |  |  | 23.90 |  |  | 930 |  |  | 32.14 |

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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