Property, Plant and Equipment, net - Schedule of long-lived assets by geographic locations (Details) - USD ($) $ in Thousands	Sep. 26, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, net	$ 50,393	$ 43,729
United States [Member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, net	48,359	42,264
International [member]
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, net	$ 2,034	$ 1,465

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