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Stock-based Compensation - RSAs & Performance-Based RSUs (Details)
3 Months Ended
Mar. 31, 2023
$ / shares
shares
RSAs  
Number of shares  
Beginning balance (in shares) | shares 52,066
Granted (in shares) | shares 42,301
Vested (in shares) | shares (28,426)
Forfeited (in shares) | shares 0
Ending balance (in shares) | shares 65,941
Weighted average price at grant  
Beginning balance (in dollars per share) | $ / shares $ 55.77
Granted (in dollars per share) | $ / shares 55.46
Vested (in dollars per share) | $ / shares 56.02
Forfeited (in dollars per share) | $ / shares 0
Ending balance (in dollars per share) | $ / shares $ 55.47
RSUs  
Number of shares  
Beginning balance (in shares) | shares 92,625
Granted (in shares) | shares 42,464
Performance criteria adjustment (in shares) | shares 14,822
Vested (in shares) | shares (40,589)
Forfeited (in shares) | shares (9,250)
Ending balance (in shares) | shares 100,072
Weighted average price at grant  
Beginning balance (in dollars per share) | $ / shares $ 54.06
Granted (in dollars per share) | $ / shares 55.46
Performance criteria adjustment (in dollars per share) | $ / shares 56.84
Vested (in dollars per share) | $ / shares 56.84
Forfeited (in dollars per share) | $ / shares 53.66
Ending balance (in dollars per share) | $ / shares $ 55.38