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Leases Schedule of Lease Payments (Details) - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Leases [Abstract]    
2019 $ 621  
2020 1,206  
2021 1,100  
2022 857  
2023 548  
Thereafter 851  
Total undiscounted payments 5,183  
Less: present value adjustment (520)  
Operating lease, liability $ 4,663 $ 0