Stock-based Compensation - Summary of Stock Award Activity (Detail) - Stock Awards [Member] - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares, Beginning Balance	103,278
Granted, Shares	64,392
Vested, Shares	(69,314)
Forfeited/Modified due to change of assumptions, Shares	5,613
Shares, Ending Balance	103,969	103,278
Unvested Weighted Average Grant Date Fair Value, Beginning Balance	$ 61.30
Granted, Weighted Average Grant Date Fair Value	106.78	$ 119.76	$ 98.46
Vested, Weighted Average Grant Date Fair Value	99.30
Forfeited/Modified due to change of assumptions, Weighted Average Grand Date Fair Value	86.94
Unvested Weighted Average Grant Date Fair Value, Ending Balance	$ 110.50	$ 61.30