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Stock-Based Compensation - Restricted Stock Units (Details) - Restricted stock units
3 Months Ended
Mar. 31, 2022
$ / shares
shares
Number of Shares  
Outstanding and Unvested, beginning balance (in shares) | shares 819,828
Restricted stock units granted (in shares) | shares 659,189
Restricted stock units vested (in shares) | shares (20,386)
Restricted stock units forfeited (in shares) | shares (31,444)
Outstanding and Unvested, ending balance (in shares) | shares 1,427,187
Per Share Weighted- Average Fair Value  
Outstanding and Unvested, beginning balance (in usd per share) | $ / shares $ 116.70
Restricted stock units granted (in usd per share) | $ / shares 79.97
Restricted stock units vested (in usd per share) | $ / shares 174.64
Restricted stock units forfeited (in usd per share) | $ / shares 97.85
Outstanding and Unvested, ending balance (in usd per share) | $ / shares $ 99.32