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Intangible Assets, Net - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Finite Lived Intangible Assets [Line Items]        
Amortization expenses $ 1,063 $ 689 $ 2,847 $ 1,860
Internally-developed Software        
Finite Lived Intangible Assets [Line Items]        
Intangible assets that have not started amortization 2,635   2,635  
Capitalized costs of internally-developed software $ 1,646 $ 1,708 $ 5,790 $ 4,939