Equity - Schedule of Stock Options, SARS, and Non-vested Restricted Stock (Details) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Stock Options and SARs
Outstanding, end of year (in shares)	130,409
Exercisable at end of year (in shares)	72,106
Non-vested Restricted Stock
Outstanding, beginning of year (in shares)	83,956	62,597	80,153
Granted (in shares)	53,358	53,471	41,735
Canceled (in shares)	(1,184)	(4,042)	(17,054)
Vested and issued (in shares)	(32,239)	(28,070)	(42,237)
Outstanding, end of year (in shares)	103,891	83,956	62,597
Weighted- Average Grant Date Fair Value
Outstanding, beginning of year (in dollars per share)	$ 71.76	$ 75.81	$ 60.98
Granted (in dollars per share)	88.92	66.02	80.51
Canceled (in dollars per share)	79.82	69.66	74.97
Vested and issued (in dollars per share)	77.98	70.13	52.65
Outstanding, end of year (in dollars per share)	$ 78.55	$ 71.76	$ 75.81
Stock Appreciation Rights (SARs) [Member]
Stock Options and SARs
Outstanding, beginning of year (in shares)	116,417	98,836	124,960
Granted (in shares)	28,575	34,881	24,582
Exercised (in shares)	(14,583)	(15,912)	(40,851)
Canceled (in shares)	0	(1,388)	(9,855)
Outstanding, end of year (in shares)	130,409	116,417	98,836
Exercisable at end of year (in shares)	72,106	66,602	72,696
Weighted- Average Exercise Price
Outstanding, beginning of year (in dollars per share)	$ 57.16	$ 46.47	$ 38.38
Granted (in dollars per share)	88.68	74.80	82.76
Exercised (in dollars per share)	38.99	26.93	35.61
Canceled (in dollars per share)	0	86.15	79.45
Outstanding, end of year (in dollars per share)	66.10	57.16	46.47
Exercisable at end of year (in dollars per share)	$ 52.85	$ 42.08	$ 34.07