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Intangible Assets (Schedule Of Estimated Future Amortization Expenses) (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Intangible Assets [Abstract]    
2020 $ 1,609  
2021 1,515  
2022 474  
2023 457  
2024 68  
Net Carrying Amount $ 4,123 $ 5,733