XML 35 R26.htm IDEA: XBRL DOCUMENT v3.22.1
Details of Certain Financial Statement Components - Accrued liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Accrued liabilities    
Accrued wages and benefits $ 113 $ 402
Accrued vacation 96 82
Other accrued liabilities 24 23
Total accrued liabilities $ 251 $ 507