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Stock-Based Compensation - Restricted Stock Activity (Details)
3 Months Ended
Mar. 31, 2022
$ / shares
shares
Restricted Stock  
Restricted Stock  
Beginning of period (in shares) | shares 276,611
Granted (in shares) | shares 167,797
Released (in shares) | shares (56,687)
Forfeited (in shares) | shares (6,667)
End of period (in shares) | shares 381,054
Weighted Average Grant Date Fair Value  
Beginning balance (USD per share) | $ / shares $ 80.85
Granted (USD per share) | $ / shares 70.09
Released (USD per share) | $ / shares 89.34
Forfeited (USD per share) | $ / shares 86.86
Ending balance (USD per share) | $ / shares $ 74.77
Stock-Settled Restricted Stock Units  
Restricted Stock  
Beginning of period (in shares) | shares 105,592
Granted (in shares) | shares 59,002
Released (in shares) | shares (40,599)
Forfeited (in shares) | shares 0
End of period (in shares) | shares 123,995
Weighted Average Grant Date Fair Value  
Beginning balance (USD per share) | $ / shares $ 71.00
Granted (USD per share) | $ / shares 46.64
Released (USD per share) | $ / shares 66.31
Forfeited (USD per share) | $ / shares 0
Ending balance (USD per share) | $ / shares $ 61.01