Quarterly report pursuant to Section 13 or 15(d)

Balance Sheet Components - Accrued liabilities (Details)

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Balance Sheet Components - Accrued liabilities (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Balance Sheet Components    
Accrued vacation $ 258 $ 238
Accrued compensation 108 17
Accrued bonus   158
Customer advances 147 186
Accrued audit fees 137 126
Accrued other 383 121
Total accrued liabilities $ 1,033 $ 846 [1]
[1] The condensed consolidated balance sheet as of December 31, 2018 was derived from the audited consolidated balance sheet as of that date.