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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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