Balance Sheet Components - Property and Equipment, Net (Details) - USD ($) $ in Thousands	12 Months Ended
Jan. 31, 2021	Feb. 02, 2020	Jan. 31, 2019
Property Plant And Equipment [Line Items]
Total property and equipment	$ 475,515	$ 395,622
Less: accumulated depreciation and amortization	(312,474)	(272,882)
Property and equipment, net	163,041	122,740
Depreciation and amortization	57,100	80,400	$ 68,300
Test equipment
Property Plant And Equipment [Line Items]
Total property and equipment	238,069	205,555
Computer equipment and software
Property Plant And Equipment [Line Items]
Total property and equipment	184,518	141,387
Furniture and fixtures
Property Plant And Equipment [Line Items]
Total property and equipment	8,484	8,324
Leasehold improvements
Property Plant And Equipment [Line Items]
Total property and equipment	$ 44,444	$ 40,356

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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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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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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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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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