Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
Apr. 02, 2016	Apr. 04, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 50,562	$ 36,259
Other comprehensive income (loss), net of tax effects:
Foreign currency translation adjustments	4,214	(8,890)
Changes in unrealized holding gains or losses on available-for-sale securities, net of reclassification adjustment for realized gains and losses	865	65
Changes in defined benefit plan liabilities	81	291
Total other comprehensive income (loss), net of tax effects	5,160	(8,534)
Comprehensive income	$ 55,722	$ 27,725

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount after tax and reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities. Excludes amounts related to other than temporary impairment (OTTI) loss.

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