Stock Options - Schedule of Restricted Stock Award Activity (Details) - Restricted Stock - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Shares
Outstanding at beginning of year (in shares)	91,043	78,705	75,636
Granted (in shares)	35,224	44,307	36,060
Exercised (in shares)	(45,651)	(31,594)	(32,466)
Canceled (in shares)	0	(375)	(525)
Outstanding at end of year (in shares)	80,616	91,043	78,705
Grant-Date Fair Value
Outstanding at beginning of year (in dollars per share)	$ 104.77	$ 94.34	$ 81.39
Granted (in dollars per share)	157.00	111.95	105.69
Exercised (in dollars per share)	101.36	88.90	69.94
Canceled (in dollars per share)	0	100.34	99.96
Outstanding at end of year (in dollars per share)	$ 129.53	$ 104.77	$ 94.34