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, 2021
Dec. 31, 2020
Balance Sheet Components    
Accrued vacation $ 344 $ 328
Accrued compensation 321 84
Customer advances 715 373
Accrued professional fees 158 161
Accrued rebate 319 326
Accrued other 183 161
Total accrued liabilities $ 2,040 $ 1,433 [1]
[1] The condensed consolidated balance sheet as of December 31, 2020 was derived from the audited consolidated balance sheet as of that date.