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Goodwill and Other Intangible Assets (Estimated amortization expense) (Details)
$ in Thousands
Dec. 31, 2018
USD ($)
Summary of estimated amortization expense associated with identifiable intangibles  
2016 $ 71
2017 48
2018 29
2018 15
2019 2
Thereafter 4
Net Intangible Assets $ 169