Stockholders' Equity - Reclassified from AOCI (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 29, 2018	Sep. 30, 2017	Sep. 29, 2018	Sep. 30, 2017
Amounts Reclassified from AOCI
Income (loss) before income taxes	$ 22,307	$ 22,127	$ 59,063	$ 53,413
Provision (benefit) for income taxes	5,454	(2,178)	9,383	(1,469)
Net income	27,761	$ 19,949	68,446	51,944
Reclassifications From Accumulated Other Comprehensive Income (Loss)
Amounts Reclassified from AOCI
Income (loss) before income taxes	(131)		(213)	1,808
Provision (benefit) for income taxes	28		45	(633)
Net income	(103)		(168)	1,175
Reclassifications From Accumulated Other Comprehensive Income (Loss) \| Losses on available-for-sales securities
Amounts Reclassified from AOCI
Interest income and other, net			(49)
Reclassifications From Accumulated Other Comprehensive Income (Loss) \| Gains (losses) on cash flow hedges
Amounts Reclassified from AOCI
Interest expense	$ (131)		$ (164)	$ 1,808

Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of the cost of borrowed funds accounted for as interest expense.

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Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders.

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