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Employee Benefit Plans (Tables) | 12 Months Ended
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Dec. 28, 2019
Share-based Payment Arrangement [Abstract] |
Summary of stock options and stock appreciation rights activity | The following table summarizes stock option, stock appreciation rights and performance stock appreciation rights activity:
Stock Options and Stock Appreciation Rights | Shares |  | Weighted-Average Exercise Price |  | Weighted-Average Remaining Contractual Term (Years) |  | Aggregate Intrinsic Value
| in thousands |  |  |  |  |  | in thousands
Outstanding at December 31, 2016 | 2,287 |  |  | $ | 50.58 |  |  | 6.2 |  | $ | 627 |
Granted | — |  |  | — |  |  |  |  |
Exercised | (13 | ) |  | 13.65 |  |  |  |  | 35 |
Forfeited or expired | (97 | ) |  | 67.99 |  |  |  |  |
Outstanding at December 30, 2017 | 2,177 |  |  | 50.01 |  |  | 5.3 |  | — |
Granted | — |  |  | — |  |  |  |  |
Exercised | (21 | ) |  | 14.46 |  |  |  |  | 37 |
Forfeited or expired | (226 | ) |  | 59.58 |  |  |  |  |
Outstanding at December 29, 2018 | 1,930 |  |  | 49.25 |  |  | 1.3 |  | 37 |
Granted | — |  |  | — |  |  |  |  |
Exercised | (13 | ) |  | 13.65 |  |  |  |  | 18 |
Forfeited or expired | (1,408 | ) |  | 39.84 |  |  |  |  |
Outstanding at December 28, 2019 | 509 |  |  | 76.13 |  |  | 2.5 |  | — |
Exercisable at December 28, 2019 | 509 |  |  | $ | 76.13 |  |  | 2.5 |  | $ | — |
Summary of stock options and stock appreciation rights outstanding and exercisable | The following tables summarize information with respect to stock options, stock appreciation rights and performance stock appreciation rights outstanding and exercisable at December 28, 2019:
Stock Options Outstanding |  | Stock Options Exercisable
Range of Exercise Prices | Number of Shares |  | Weighted-Average Exercise Price |  | Weighted-Average Remaining Contractual Term (Years) |  | Number of Shares |  | Weighted- Average Exercise Price
| in thousands |  |  |  |  |  | in thousands |  |
$29.49 - $47.99 | 33 |  |  | 38.40 |  |  | 0.2 |  | 33 |  |  | 38.40 |
$55.04 - $83.83 | 64 |  |  | 81.40 |  |  | 1.2 |  | 64 |  |  | 81.40 |
$95.91 - $131.46 | 87 |  |  | 128.04 |  |  | 2.1 |  | 87 |  |  | 128.04 |
Total | 184 |  |  | $ | 95.63 |  |  | 1.5 |  | 184 |  |  | $ | 95.63 |
Stock Appreciation Rights Outstanding |  | Stock Appreciation Rights Exercisable
Range of Exercise Prices | Number of Shares |  | Weighted-Average Exercise Price |  | Weighted-Average Remaining Contractual Term (Years) |  | Number of Shares |  | Weighted- Average Exercise Price
| in thousands |  |  |  |  |  | in thousands |  |
$29.49 - $47.99 | 182 |  |  | 42.30 |  |  | 3.8 |  | 182 |  |  | 42.30 |
$55.04 - $83.83 | 77 |  |  | 78.92 |  |  | 2.5 |  | 77 |  |  | 78.92 |
$95.91 - $131.46 | 66 |  |  | 111.90 |  |  | 1.6 |  | 66 |  |  | 111.90 |
Total | 325 |  |  | $ | 65.08 |  |  | 3.0 |  | 325 |  |  | $ | 65.08 |
Summary of restricted stock and restricted stock unit activity | The following table summarizes restricted stock, restricted stock unit and performance restricted stock unit activity:
Restricted Stock, Restricted Stock Units and Performance Restricted Stock Units | Number of Shares |  | Weighted-Average Grant Date Fair Value Per Share
| in thousands |  |
Nonvested at December 31, 2016 | 1,405 |  |  | $ | 40.41 |
Granted | 2,381 |  |  | 14.81 |
Vested | (479 | ) |  | 44.79 |
Forfeited | (326 | ) |  | 25.62 |
Nonvested at December 30, 2017 | 2,981 |  |  | $ | 20.84 |
Granted | 1,456 |  |  | 14.35 |
Vested | (1,040 | ) |  | 25.21 |
Forfeited | (386 | ) |  | 19.87 |
Nonvested at December 29, 2018 | 3,011 |  |  | $ | 17.86 |
Granted | 1,008 |  |  | 13.01 |
Vested | (1,293 | ) |  | 17.92 |
Forfeited | (397 | ) |  | 21.49 |
Nonvested at December 28, 2019 | 2,329 |  |  | $ | 15.16 |

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