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Acquisitions, Goodwill and Intangible Assets (Schedule of Estimated Aggregate Amortization Expense for Finite-Lived Intangible Assets) (Details)
$ in Thousands
Dec. 31, 2019
USD ($)
Acquisitions, Goodwill and Intangible Assets [Abstract]  
2020 $ 2,467
2021 503
2022 501
2023 $ 316