Other Financial Statement Information - Property and Equipment, Net (Details) - USD ($) $ in Thousands	Apr. 02, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Property and Equipment, Gross	$ 155,666	$ 153,712
Less: accumulated depreciation and amortization	(112,530)	(110,571)
Total	43,136	43,141
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, Gross	73,377	72,731
Capitalized Software [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, Gross	37,140	37,141
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, Gross	38,800	38,718
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, Gross	2,871	2,913
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property and Equipment, Gross	$ 3,478	$ 2,209

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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