Quarterly report pursuant to Section 13 or 15(d)

Lease Obligations - Additional Information (Details)

v3.20.2
Lease Obligations - Additional Information (Details) - USD ($)
$ in Thousands
 1 Months Ended 3 Months Ended 9 Months Ended
Jun. 30, 2020
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Lessee, Lease, Description [Line Items]          
Lease liabilities   $ 779   $ 779  
Lease expense   $ 132 $ 134 $ 405 $ 404
Richmond, California          
Lessee, Lease, Description [Line Items]          
Operating lease agreement   5 years   5 years  
Lease payment $ 300        
Operating lease abatement $ 48        
Lease liabilities   $ 79   $ 79  
Hamburg, Germany          
Lessee, Lease, Description [Line Items]          
Operating lease agreement   5 years   5 years  
Renewal term   5 years   5 years