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Consolidated Balance Sheet Detail - Schedule of Accrued Expenses (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Accrued expenses and other: |  |
Accrued wages and employee benefits | $ 296 | $ 327
Customer advance |  | 300
Professional fees, legal and consulting | 229 | 178
IC development and wafer purchases | 104 | 90
Warranty accrual | 63 | 73
Interest payable | 84 | 51
Corporate taxes | 20 | 21
Other | 359 | 362
Total | $ 1,155 | $ 1,402

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