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Balance Sheet Components (Details) - USD ($) $ in Thousands | Sep. 29, 2019 | Dec. 30, 2018
--- | --- | ---
Inventories: |  |
Raw materials | $ 191 |
Work-in-process | 2,535 | $ 3,120
Finished goods | 652 | 716
Inventories | 3,378 | 3,836
Property and equipment: |  |
Property and equipment, gross | 13,002 | 14,149
Less: Accumulated depreciation and amortization | (11,969) | (12,700)
Property and equipment, net | 1,033 | 1,449
Equipment |  |
Property and equipment: |  |
Property and equipment, gross | 10,703 | 10,607
Software |  |
Property and equipment: |  |
Property and equipment, gross | 1,790 | 2,788
Furniture and fixtures |  |
Property and equipment: |  |
Property and equipment, gross | 35 | 42
Leasehold improvements |  |
Property and equipment: |  |
Property and equipment, gross | $ 474 | $ 712

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