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Stock Incentive Plans - Schedule of Performance Share Unit Activity (Detail) - Performance Share Units ("PSUs") [Member]
12 Months Ended
Dec. 31, 2021
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Nonvested beginning balance, Units | shares 8,464
Granted, Units | shares 29,821
Vested, Units | shares (3,360)
Cancelled/Forfeited, Units | shares (592)
Nonvested ending balance, Units | shares 34,333
Nonvested beginning balance, Weighted Average Grant Date Fair Value | $ / shares $ 76.78
Granted, Weighted Average Grant Date Fair Value | $ / shares 69.17
Vested, Weighted Average Grant Date Fair Value | $ / shares 82.21
Cancelled/Forfeited, Weighted Average Grant Date Fair Value | $ / shares 82.21
Nonvested ending balance, Weighted Average Grant Date Fair Value | $ / shares $ 69.54