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Operating Leases (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Operating Leases [Abstract]      
Rental expense $ 837 $ 770 $ 596
Non-Cancelable Operating Leases [Abstract]      
2021 470    
2022 225    
2023 164    
2024 46    
Thereafter 4    
Future minimum rental commitments $ 909