Stock Options - Schedule of Non-Qualified Stock Options Activity (Details) - Non Qualified Options - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Shares
Options outstanding at beginning of year (in shares)	3,000	5,300	40,200
Granted (in shares)	0	0	0
Exercised (in shares)	(1,000)	(2,300)	(34,900)
Canceled (in shares)	0	0	0
Options outstanding at end of year (in shares)	2,000	3,000	5,300
Exercise Price
Outstanding at beginning of year, exercise price (in dollars per share)	$ 53.51	$ 46.87	$ 42.99
Granted, exercise price (in dollars per share)	0	0	0
Exercised, exercise price (in dollars per share)	53.51	38.22	42.40
Canceled, exercise price (in dollars per share)	0	0	0
Outstanding at end of year, exercise price (in dollars per share)	$ 53.51	$ 53.51	$ 46.87
Options exercisable at end of year (in shares)	2,000	3,000	5,300
Exercisable at end of year, exercise price (in dollars per share)	$ 53.51	$ 53.51	$ 46.87