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Goodwill and Intangible Assets, Net - Schedule of Expected Amortization of Intangible Assets (Details) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract]    
2019 (for the remaining nine months) $ 4,128  
2020 4,411  
2021 4,079  
2022 2,847  
2023 2,703  
2024 and thereafter 3,409  
Net carrying amount $ 21,577 $ 23,197