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Goodwill and Intangible Assets (Estimated Aggregate Future Amortization Expense) (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Sep. 24, 2019
Goodwill and Intangible Assets Disclosure [Abstract]    
Remainder of 2020 $ 18  
2021 17  
2022 6  
Net Carrying Amount $ 41 $ 51