Quarterly report pursuant to Section 13 or 15(d)

Lease Obligations -Additional Information (Details)

v3.21.1
Lease Obligations -Additional Information (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended
Jun. 30, 2020
Mar. 31, 2021
Mar. 31, 2020
Lessee, Lease, Description [Line Items]      
Lease liabilities   $ 646  
Lease expense   $ 132 $ 138
Richmond, California      
Lessee, Lease, Description [Line Items]      
Term of lease   5 years  
Lease payment $ 300    
Operating Lease, Abatement $ 48    
Lease liabilities   $ 79  
Hamburg,Germany      
Lessee, Lease, Description [Line Items]      
Term of lease   5 years  
Renewal term   5 years