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Consolidated Balance Sheet Detail - Schedule of Inventories/Prepaid/PP&E (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Inventories: |  |
Work-in-process | $ 548 | $ 1,612
Finished goods | 600 | 154
Total | 1,148 | 1,766
Prepaid expenses and other: |  |
Prepaid IC material and production costs | 620 | 1,107
Prepaid insurance | 128 | 115
Prepaid software | 28 | 38
Refundable tax | 86 | 4
Other | 61 | 83
Total | 923 | 1,347
Property and equipment, net: |  |
Property and equipment, gross | 4,609 | 4,774
Less: Accumulated depreciation and amortization | (4,330) | (3,947)
Property and equipment, net | 279 | 827
Equipment, furniture and fixtures and leasehold improvements |  |
Property and equipment, net: |  |
Property and equipment, gross | 4,486 | 4,478
Acquired software |  |
Property and equipment, net: |  |
Property and equipment, gross | $ 123 | $ 296

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