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Acquisitions, Intangible Assets and Goodwill - Summary of Future Amortization Expense (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Finite Lived Intangible Assets [Line Items]    
Acquisition intangible assets, net, Net Carrying Amount $ 21,207 $ 33,150
Capitalized Internal-Use Software, Net    
Finite Lived Intangible Assets [Line Items]    
2021 10,950  
2022 6,963  
2023 1,584  
2024 0  
2025 0  
Thereafter 0  
Acquisition intangible assets, net, Net Carrying Amount 19,497  
Acquisition Intangible Assets, Net    
Finite Lived Intangible Assets [Line Items]    
2021 10,299  
2022 5,121  
2023 1,928  
2024 1,670  
2025 1,389  
Thereafter 800  
Acquisition intangible assets, net, Net Carrying Amount $ 21,207