Net Loss per Share - Weighted Average Shares (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Numerator:      
Net Loss $ (52,412) $ (42,330) $ (196,500)
Denominator:      
Weighted average common shares outstanding, basic and diluted 90,149,049 82,314,577  
Net loss per share, basic and diluted $ (0.58) $ (0.51)