Annual report pursuant to Section 13 and 15(d)

Balance Sheet Components - Accrued liabilities (Details)

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Balance Sheet Components - Accrued liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Balance Sheet Components    
Accrued vacation $ 385 $ 328
Accrued rebate 356 326
Accrued compensation 231 84
Accrued audit fees 191 161
Customer advances   373
Accrued other 253 161
Total accrued liabilities $ 1,416 $ 1,433