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Summary of Significant Accounting Policies-Cash Flow Information (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 29, 2018 | Dec. 30, 2017 | Dec. 31, 2016 | Jan. 02, 2016
Cash paid during the year for: |  |  |  |
Interest (net of amounts capitalized) | $ 193 | $ 551 | $ 4,052 |
Income taxes | 36,589 | 91,061 | 31,230 |
Noncash investing and financing activities: |  |  |  |
Unpaid purchases of property, plant and equipment | 2,391 | 1,559 | 2,009 |
Unsettled common stock proceeds from option exercises | 4 | 161 | 165 |
Unsettled common stock repurchases | 0 | 1,988 | 0 |
Cash and cash equivalents | 552,490 | 315,302 | 305,970 |
Restricted cash | 151 | 181 | 2,228 |
Total cash, cash equivalents and restricted cash shown in the statement of cash flows | $ 552,641 | $ 315,483 | $ 308,198 | $ 132,462

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