Quarterly report pursuant to Section 13 or 15(d)

Lease Obligations -Additional Information (Details)

v3.21.2
Lease Obligations -Additional Information (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Lessee, Lease, Description [Line Items]          
Remainder of 2021   $ 301   $ 301  
2022   235   235  
Total lease payments   536   536  
Less: imputed interest   (22)   (22)  
Present value of lease liabilities   $ 514   $ 514  
Weighted-average remaining lease term (in years)   11 months 8 days   11 months 8 days  
Weighted-average discount rate   10.50%   10.50%  
Lease expense   $ 132 $ 135 $ 265 $ 273
Richmond, California          
Lessee, Lease, Description [Line Items]          
Term of lease   5 years   5 years  
Lease payment $ 300        
Operating lease, abatement $ 48        
Present value of lease liabilities   $ 79   $ 79  
Hamburg,Germany          
Lessee, Lease, Description [Line Items]          
Term of lease   5 years   5 years  
Renewal term   5 years   5 years