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Share-Based Compensation - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended
Oct. 31, 2021
Mar. 31, 2022
Mar. 31, 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   $ 9,400  
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 $ 129.09 $ 117.11  
Granted awards (shares) 342 683  
Unrecognized compensation expense related to the awards to non-employee directors   $ 100  
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 $ 129.09 $ 117.11  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 342 683  
Total [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Granted awards (shares)   6,830  
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   6,830  
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   $ 123.68  
Granted awards (shares)   63,382  
Vesting period   3 years  
Payment, Tax Withholding, Share-based Payment Arrangement   $ 2,800  
Intrinsic value of the SICP awards   $ 27,600  
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   $ 123.68  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period   63,382  
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