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Share-Based Compensation - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation 21,832 14,020
Payment, Tax Withholding, Share-based Payment Arrangement $ 2,838 $ 1,478
Unrecognized compensation cost $ 8,800  
Awards to non-employee directors [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value $ 130.36  
Granted awards (shares) 652  
Unrecognized compensation expense related to the awards to non-employee directors $ 700  
Shares awarded to non-employee directors [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value $ 130.36  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 652  
Total [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Granted awards (shares) 6,520  
Shares awarded to non-employee directors [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 6,520  
Award to key employees [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Expired In Period 557  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value $ 119.77  
Granted awards (shares) 66,942  
Vesting period 3 years  
Payment, Tax Withholding, Share-based Payment Arrangement $ 2,800  
Intrinsic value of the SICP awards $ 26,400  
Shares awarded to non-employee directors [Line Items]    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value $ 119.77  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 66,942  
Accelerated Vested Shares [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation 21,832