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Stock Incentive Plans - Restricted Stock Award Activity (Details) - Restricted Stock and RSUs - 2016 Plan
$ / shares in Units, $ in Millions
9 Months Ended
Sep. 30, 2023
USD ($)
$ / shares
shares
Number of Restricted Shares and RSUs  
Unvested awards, beginning balance (in shares) | shares 323,128
Restricted shares granted (in shares) | shares 95,392
Vested (in shares) | shares (134,279)
Forfeited (in shares) | shares (391)
Unvested awards, ending balance (in shares) | shares 283,850
Weighted Average Grant Date Fair Value  
Beginning balance (in dollars per share) | $ / shares $ 45.10
Granted (in dollars per share) | $ / shares 55.90
Vested (in dollars per share) | $ / shares 41.90
Forfeited (in dollars per share) | $ / shares 47.44
Ending balance (in dollars per share) | $ / shares $ 50.24
Aggregate Fair Value (in millions)  
Aggregate Fair Value (in millions) | $ $ 11.9