OTHER FINANCIAL STATEMENT INFORMATION - Property and Equipment, Net (Details) - USD ($) $ in Thousands	Apr. 01, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 164,424	$ 162,137
Less: accumulated depreciation and amortization	(121,847)	(119,416)
Total	42,577	42,721
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	79,483	78,461
Capitalized software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	38,243	38,306
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	40,659	40,658
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2,991	2,820
Construction-in-progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 3,048	$ 1,892

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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