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Employee Benefit Plans - Stock Option Activity (Details) - Stock Option Awards - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Dec. 29, 2018 | Dec. 30, 2017
Number of Shares |  |
Options Outstanding, Beginning Balance (in shares) | 307,000 |
Exercised (in shares) | (8,000) | 0
Options Outstanding, Ending Balance (in shares) | 299,000 | 307,000
Vested and Exercisable at end of year (in shares) | 299,000 |
Weighted Average Exercise Price |  |
Options Outstanding, Beginning Balance (in dollars per share) | $ 20.72 |
Exercised (in dollars per share) | 15.51 |
Options Outstanding, Ending Balance (in dollars per share) | 20.86 | $ 20.72
Vested and Exercisable at end of year (in dollars per share) | $ 20.86 |
Additional Information: |  |
Weighted average remaining contractual life, options outstanding at end of year | 2 years 6 months |
Weighted average remaining contractual life, vested and exercisable at end of year | 2 years 6 months |
Aggregate intrinsic value, options outstanding at end of year | $ 18,029 |
Aggregate intrinsic value, vested and exercisable at end of year | $ 18,029 |

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