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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. 02, 2016	Apr. 04, 2015
Analysis of Product Revenues Based upon the Geographic Area Shipped
Total product revenue	$ 163,290	$ 147,357
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	$ 4,233	$ 4,202
Total product revenue, in percentage	2.60%	2.90%
Europe, Middle East and Africa | Reportable Geographical Components
Analysis of Product Revenues Based upon the Geographic Area Shipped
Total product revenue	$ 31,970	$ 24,061
Total product revenue, in percentage	19.60%	16.30%
Asia and Australia | Reportable Geographical Components
Analysis of Product Revenues Based upon the Geographic Area Shipped
Total product revenue	$ 13,582	$ 11,818
Total product revenue, in percentage	8.30%	8.00%
United States | Reportable Geographical Components
Analysis of Product Revenues Based upon the Geographic Area Shipped
Total product revenue	$ 113,505	$ 107,276
Total product revenue, in percentage	69.50%	72.80%

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