Segments and Geographic Information - Long-Lived Assets by Geographical Location (Details) - USD ($) $ in Thousands	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Long-Lived Assets [Line Items]
Long-lived assets	$ 310,908	$ 334,158	$ 357,281
United States
Long-Lived Assets [Line Items]
Long-lived assets	280,405	299,574	323,369
Europe
Long-Lived Assets [Line Items]
Long-lived assets	26,118	30,922	30,903
Asia-Pacific
Long-Lived Assets [Line Items]
Long-lived assets	$ 4,385	$ 3,662	$ 3,009