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Share-Based Compensation (Tables) | 12 Months Ended
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Dec. 29, 2018
Share-Based Compensation |
Summary of option activity |
|  |  |  | Weighted |  | Weighted Average |  |  |
|  |  |  | Average |  | Remaining |  | Aggregate
|  |  |  | Exercise |  | Contractual |  | Intrinsic
|  | Options |  | Price |  | Term |  | Value
|  |  |  |  |  |  |  |  | (in thousands)
Outstanding at December 30, 2017 |  | 665,717 |  | $ | 24.14 |  |  |  | $ | 13,851
Fiscal 2018: |  |  |  |  |  |  |  |  |  |
Granted |  | 22,443 |  |  | 47.45 |  |  |  |  |
Exercised |  | (100,771) |  |  | 21.50 |  |  |  | $ | 2,955
Expired |  | — |  |  | — |  |  |  |  |
Forfeited |  | (1,408) |  |  | 30.97 |  |  |  | $ | 28
Outstanding at December 29, 2018 |  | 585,981 |  | $ | 25.48 |  | 3.61 |  | $ | 9,286
Options exercisable at December 29, 2018 |  | 469,697 |  | $ | 24.02 |  | 3.04 |  | $ | 7,962
Vested or expected to vest at December 29, 2018 |  | 585,383 |  | $ | 25.46 |  | 3.61 |  | $ | 9,282
Schedule of weighted average assumptions used to estimate the fair market value of the stock options at the date of grant |
|  | 2018 |  | 2017 |  | 2016 |
Risk-free interest rate |  | 2.8 | % | 2.1 | % | 1.3 | %
Expected volatility |  | 39 | % | 32 | % | 36 | %
Expected dividend yield |  | 1.7 | % | 1.5 | % | 1.5 | %
Forfeiture rate |  | 0.4 | % | 0.4 | % | 0.5 | %
Weighted average expected life (in years) |  | 10.00 |  | 4.49 |  | 4.58 |
Schedule of roll-forward of the outstanding non-vested stock options |
|  | Options
|  |  |  | Weighted-Average
|  | Number of |  | Grant Date
|  | Shares |  | Fair Value
Non-vested at December 30, 2017 |  | 209,078 |  | $ | 8.98
Granted |  | 22,443 |  |  | 19.96
Vested |  | (113,829) |  |  | 9.41
Forfeited |  | (1,408) |  |  | 10.08
Non-vested at December 29, 2018 |  | 116,284 |  | $ | 10.64
Schedule of roll-forward of the shares of restricted stock |
|  | Shares of Restricted Stock
|  |  |  | Weighted-Average
|  | Number of |  | Grant Date
|  | Shares |  | Fair Value
Non-vested at December 30, 2017 |  | 52,725 |  | $ | 27.97
Granted |  | 8,256 |  |  | 54.50
Vested |  | (24,975) |  |  | 26.02
Forfeited |  | — |  |  | —
Non-vested at December 29, 2018 |  | 36,006 |  | $ | 35.41
Schedule of roll-forward of the time-vesting restricted stock units |
|  | Time-Vesting
|  | Restricted Stock Units
|  |  |  | Weighted-Average
|  | Number of |  | Grant Date
|  | Units |  | Fair Value
Non-vested at December 30, 2017 |  | 119,820 |  | $ | 27.90
Granted |  | 21,901 |  |  | 46.90
Vested |  | (61,258) |  |  | 27.18
Forfeited |  | (704) |  |  | 32.53
Non-vested at December 29, 2018 |  | 79,759 |  | $ | 33.64
Summary of outstanding non-vested performance-vesting restricted stock units |
|  | Performance-Vesting
|  | Restricted Stock Units
|  |  |  |  | Weighted Average
|  |  |  |  | Grant Date
|  | Number of Units |  |  | Fair Value
Non-vested at December 30, 2017 |  | 280,595 |  | $ | 25.51
Granted |  | 18,701 |  |  | 47.45
Vested |  | (151,276) |  |  | 22.89
Forfeited |  | (26,070) |  |  | 21.78
Non-vested at December 29, 2018 |  | 121,950 |  | $ | 32.92

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