Stock Based Compensation (Tables)

3 Months Ended

Mar. 31, 2023

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Option Activity

				Weighted	Aggregate
		Weighted		Average	Intrinsic
		Average		Remaining	Value
	Options	Exercise Price		Contractual Life	(in 000’s)
Outstanding options at January 1, 2023	1,695,660	$	82.42
Options granted	26,000		131.78
Options exercised	(142,634)		55.30
Outstanding options at March 31, 2023	1,579,026	$	85.68	4.90	$	74,575
Exercisable options at March 31, 2023	685,407	$	71.23	3.52	$	42,273

Summary of Weighted Average Grant-date Assumptions and Weighted Average Fair Values

	2023			2022
Weighted-average fair value of grants	$	27.04		$	17.28
Risk-free interest rates		4.22	%		1.20	%
Dividend yield		2.54	%		2.01	%
Expected volatility		22.93	%		22.79	%
Expected option life		5.01	years		5.01	years

Schedule of Restricted Stock Units Activity

		Weighted
		Average
		Grant Date
	RSUs	Fair Value
Nonvested at January 1, 2023	44,208	$	109.51
Granted	1,600		133.50
Reinvested	92		129.54
Nonvested at March 31, 2023	45,900	$	110.39