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Stockholders' Equity - Share repurchase programs (Details) - USD ($) shares in Thousands, $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 29, 2018 | Dec. 31, 2016 | Oct. 31, 2018 | Jul. 01, 2017
Share Repurchase Programs |  |  |  |
Value of shares repurchased and retired | $ 39,276 | $ 40,543 |  |
Common Stock |  |  |  |
Common Stock |  |  |  |
Number of shares issued during the period | 800 |  |  |
Share Repurchase Programs |  |  |  |
Number of shares repurchased and retired | 434 | 893 |  |
Value of shares repurchased and retired | $ 39,300 | $ 40,500 |  |
Program Authorization Date October 2017 |  |  |  |
Share Repurchase Programs |  |  |  |
Program amount authorized to repurchase | 200,000 |  | $ 200,000 | $ 100,000
Program Authorization Date January 2017 |  |  |  |
Share Repurchase Programs |  |  |  |
Program amount authorized to repurchase | 100,000 |  |  |
Program Authorization Date August 2015 |  |  |  |
Share Repurchase Programs |  |  |  |
Program amount authorized to repurchase | $ 100,000 |  |  |

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