XML 36 R26.htm IDEA: XBRL DOCUMENT v3.21.2
Details of Certain Financial Statement Components - Accrued liabilities (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Accrued liabilities    
Accrued warranty $ 7 $ 7
Accrued wages and benefits 348 180
Accrued vacation 77 110
Accrued other 20 46
Total accrued liabilities $ 452 $ 343