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Leases (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Assets :    
Operating lease asstes $ 720
current    
Operating lease liabilities 551
Long term    
Operating lease liabilities $ 289
Weighted Average Discount Rate    
Vehicles 3.50%  
Facilities rent 3.50%  
Minimum [Member]    
Remaining Lease Term    
Vehicles 4 months 9 days  
Facilities rent 1 year 3 months 29 days  
Maximum [Member]    
Remaining Lease Term    
Vehicles 2 years 3 months 29 days  
Facilities rent 3 years 3 months 29 days