CERTAIN BALANCE SHEET COMPONENTS - Property and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 162,137	$ 153,712
Less: accumulated depreciation and amortization	(119,416)	(110,571)
Total	42,721	43,141
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	78,461	72,731
Capitalized software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	38,306	37,141
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	40,658	38,718
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2,820	2,913
Construction-in-progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 1,892	$ 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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