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Goodwill and Intangible Assets, Net - Estimated Future Annual Amortization Expense Related to Intangible Assets (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Schedule of Estimated Future Amortization expense    
2019 $ 7,102  
2020 5,938  
2021 2,372  
2022 2,259  
2023 2,110  
Thereafter 4,589  
Intangible assets, net $ 24,370 $ 29,041
Remaining weighted average amortization period 6 years 4 months 24 days