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Segment Information and Enterprise Reporting - Analysis of Product Revenues Based upon Geographic Area Shipped (Detail) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2017	Apr. 02, 2016
Analysis of Product Revenues Based upon the Geographic Area Shipped
Total product revenue	$ 178,097	$ 163,290
Total product revenue, in percentage	100.00%	100.00%
North and South America | Reportable Geographical Components
Analysis of Product Revenues Based upon the Geographic Area Shipped
Total product revenue	$ 6,177	$ 4,233
Total product revenue, in percentage	3.50%	2.60%
Europe, Middle East and Africa | Reportable Geographical Components
Analysis of Product Revenues Based upon the Geographic Area Shipped
Total product revenue	$ 30,502	$ 31,970
Total product revenue, in percentage	17.10%	19.60%
Asia and Australia | Reportable Geographical Components
Analysis of Product Revenues Based upon the Geographic Area Shipped
Total product revenue	$ 16,735	$ 13,582
Total product revenue, in percentage	9.40%	8.30%
United States | Reportable Geographical Components
Analysis of Product Revenues Based upon the Geographic Area Shipped
Total product revenue	$ 124,683	$ 113,505
Total product revenue, in percentage	70.00%	69.50%

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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