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Stock-Based Compensation - Summary of Restricted Shares (Details) - Restricted Shares
9 Months Ended
Sep. 30, 2021
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]  
Unvested, beginning balance | shares 359,945
Granted | shares 170,150
Vested | shares (83,775)
Canceled | shares (34,033)
Unvested, ending balance | shares 412,287
Weighted Average Grant Date Fair Value  
Unvested, beginning balance | $ / shares $ 59.54
Granted | $ / shares 90.75
Vested | $ / shares 57.98
Canceled | $ / shares 61.24
Unvested, ending balance | $ / shares $ 72.59