Stock-Based Compensation - Summary of Restricted Stock and Restricted Stock Units Granted (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants (in shares)	194,864	166,202	156,789
Directors Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants (in shares)	7,110	10,746	10,031
Price per share (in dollars per share)	$ 119.59	$ 94.94	$ 92.40
Aggregate value	$ 850	$ 1,020	$ 927
Percent vested	100.00%	100.00%	97.00%
Directors Restricted Stock Units Including Dividend Equivalents
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants (in shares)	9,479	8,956	7,258
Price per share (in dollars per share)	$ 117.73	$ 95.62	$ 92.60
Aggregate value	$ 1,116	$ 856	$ 672
Percent vested	100.00%	100.00%	96.00%
Employees Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants (in shares)	96,975	0	0
Price per share (in dollars per share)	$ 120.18	$ 0	$ 0
Aggregate value	$ 11,654	$ 0	$ 0
Percent vested	0.00%	0.00%	0.00%
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants (in shares)	81,300	146,500	139,500
Price per share (in dollars per share)	$ 120.49	$ 103.23	$ 98.32
Aggregate value	$ 9,796	$ 15,123	$ 13,716
Percent vested	0.00%	0.00%	0.00%