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Business Combinations, Intangible Assets and Goodwill Schedule of Aggregate Amortization Expense for Intangible Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Business Combinations [Abstract]    
2019 $ 504  
2020 569  
2021 562  
2022 525  
2023 525  
Thereafter 3,745  
Identifiable intangible assets, net $ 6,430 $ 7,007