v3.22.1
Income Taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Income Taxes.    
Income tax expense $ 56 $ 7
Operating loss carryforwards $ 150,926  
Expiring period 20 years  
Operating loss carry forwards without limitation $ 56,336