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Stock-Based Compensation - Schedule of stock-based Compensation by Plan (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2020
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Stock-Based Compensation          
Stock based compensation expense   $ 16,835 $ 672 $ 11,296 $ 35,972
Secondary market transaction          
Stock-Based Compensation          
Stock based compensation expense $ 1,616 1,933   1,616 33,232
Employee awards          
Stock-Based Compensation          
Stock based compensation expense   $ 2,529 $ 672 $ 9,680 $ 2,740