Segment Information - Long-lived assets (Details) - USD ($) $ in Thousands		Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016	Apr. 04, 2015
Segment Reporting Information [Line Items]
Long-lived assets	[1]	$ 362,588	$ 316,544	$ 233,220
United States And Canada [Member]
Segment Reporting Information [Line Items]
Long-lived assets	[1]			149,299
Asia [Member]
Segment Reporting Information [Line Items]
Long-lived assets	[1]			17,336
Europe And Middle East [Member]
Segment Reporting Information [Line Items]
Long-lived assets	[1]			65,581
Latin America [Member]
Segment Reporting Information [Line Items]
Long-lived assets	[1]			1,004
Total International [Member]
Segment Reporting Information [Line Items]
Long-lived assets	[1]	141,109	$ 135,227	$ 83,921
Asia [Member]
Segment Reporting Information [Line Items]
Long-lived assets		14,033			$ 14,729
United States And Canada [Member]
Segment Reporting Information [Line Items]
Long-lived assets		221,479			181,317
Latin America [Member]
Segment Reporting Information [Line Items]
Long-lived assets		812			987
Europe And Middle East [Member]
Segment Reporting Information [Line Items]
Long-lived assets		$ 126,264			$ 119,511

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