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Goodwill and Intangible Assets, Net Goodwill and Intangible Assets, Net - Schedule of Future Amortization Expense (Details) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Business Combinations [Abstract]    
Remainder of 2019 $ 1,120  
2020 1,494  
2021 1,494  
2022 1,494  
2023 1,308  
2024 1,235  
Thereafter 351  
Total $ 8,496 $ 8,869