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Stockholders' Equity and Equity Compensation Plans - Summary of Unvested Restricted Common Stock Activity (Details) - Restricted common stock
shares in Thousands
3 Months Ended
Mar. 31, 2022
$ / shares
shares
Shares  
Shares, Unvested awards, beginning balance | shares 1,206
Shares, Awards granted | shares 495
Shares, Awards forfeited/cancelled | shares (34)
Shares, Awards vested | shares (339)
Shares, Unvested awards, ending balance | shares 1,328
Weighted-Average Grant Date Fair Value  
Weighted-Average Grant Date Fair Value, Unvested awards, beginning balance | $ / shares $ 45.22
Weighted-Average Grant Date Fair Value, Awards granted | $ / shares 64.84
Weighted-Average Grant Date Fair Value, Awards forfeited/cancelled | $ / shares 46.04
Weighted-Average Grant Date Fair Value, Awards vested | $ / shares 43.31
Weighted-Average Grant Date Fair Value, Unvested awards, ending balance | $ / shares $ 52.94