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Commitments and Contingencies (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Lessee, Operating Lease, Description [Abstract]    
Operating lease costs $ 448 $ 448
Cash paid for amounts included in measurement of operating lease liabilities $ 436 $ 371
Incremental borrowing rate 9.76% 9.76%
Weighted average remaining lease term 3 years 1 month 6 days 4 years 1 month 6 days
Operating Lease Maturities [Abstract]    
2021 $ 456  
2022 371  
2023 242  
2024 186  
Total remaining lease payments 1,255  
Less: imputed interest (176)  
Total lease liabilities $ 1,079  
Minimum [Member]    
Lessee, Operating Lease, Description [Abstract]    
Remaining lease term 1 year  
Maximum [Member]    
Lessee, Operating Lease, Description [Abstract]    
Remaining lease term 4 years  
Facility One [Member]    
Lessee, Operating Lease, Description [Abstract]    
Renewal option term 2 years  
Carlsbad Facility [Member]    
Lessee, Operating Lease, Description [Abstract]    
Renewal option term 5 years