Stock Compensation Plans - Stock Option Transactions Under Various Stock-Based Employee Compensation Plans (Details) - $ / shares	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Stock option activity, shares
Outstanding, beginning of year (in shares)	391,015
Granted (in shares)	45,000
Exercised (in shares)	(112,575)	(60,385)	(194,035)
Forfeited (in shares)	0
Expired (in shares)	0
Outstanding, end of year (in shares)	323,440	391,015
Exercisable at end of year (in shares)	211,640
Weighted-average exercise price per stock option
Outstanding, beginning of year, weighted average exercise price (in usd per share)	$ 85.81
Granted, weighted average exercise price (in usd per share)	122.37
Exercised, weighted average exercise price (in usd per share)	80.74
Forfeited, weighted average exercise price (in usd per share)	0
Expired, weighted average exercise price (in usd per share)	0
Outstanding, end of year, weighted average exercise price (in usd per share)	92.67	$ 85.81
Exercisable, at end of year, weighted average exercise price (in usd per share)	$ 85.35
Outstanding, end of year, weighted average remaining contractual term	6 years 3 months 25 days
Exercisable, at end of year, weighted average remaining contractual term	5 years 3 months 21 days

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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Period Type:	instant

- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.