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Share-Based Compensation - Restricted Stock Units Activity (Details) - Restricted Stock
3 Months Ended
Mar. 31, 2022
$ / shares
shares
Shares  
Unvested, Beginning balance (in shares) | shares 107,475
Granted (in shares) | shares 25,290
Vested (in shares) | shares (18,793)
Forfeited (in shares) | shares (3,720)
Unvested, Ending balance (in shares) | shares 110,252
Weighted-Average Grant Date Fair Value  
Unvested, Beginning balance (in dollars per share) | $ / shares $ 169.58
Granted (in dollars per share) | $ / shares 189.50
Vested (in dollars per share) | $ / shares 145.12
Forfeited (in dollars per share) | $ / shares 182.13
Unvested, Ending balance (in dollars per share) | $ / shares $ 177.89