Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2021

Schedule of nonvested restricted stock and deferred shares activity and related information

	Year Ended December 31,
	2021			2020			2019
		Weighted			Weighted			Weighted
		Average			Average			Average
		Grant Date			Grant Date			Grant Date
	Shares	Fair Value		Shares	Fair Value		Shares	Fair Value
	(Shares in thousands)
Unvested at beginning of year	166	$	77.97	196	$	76.56	216	$	71.28
Granted	61		128.32	92		75.77	96		78.54
Vested	(84)		81.70	(100)		74.84	(102)		68.83
Cancelled/Forfeitures	(5)		93.98	(22)		75.73	(14)		56.97
Unvested at end of year	138	$	97.43	166	$	77.97	196	$	76.56

Schedule of stock-based compensation fair value assumptions

	2021		2020
Expected life (years)	3.0		3.0
Expected stock price volatility	32.7	%	24.6	%
Expected dividend yield	0.75	%	1.1	%
Risk-free interest rate	0.3	%	0.6	%

Schedule of stock option activity and related information

	Year Ended December 31,
	2021					2020			2019
		Weighted		Weighted			Weighted			Weighted
		Average		Average			Average			Average
		Exercise		Intrinsic			Exercise			Exercise
	Options	Price		Value		Options	Price		Options	Price
	(Options in thousands)
Outstanding at beginning of year	5	$	52.40			10	$	53.65	49	$	55.25
Cancelled/Forfeitures	—		—			—		—	(1)		57.47
Exercised	(1)		51.04			(5)		55.03	(38)		55.63
Outstanding at end of year	4	$	52.92	$	141.25	5	$	52.40	10	$	53.65
Exercisable at end of year	4	$	52.92	$	141.25	5	$	52.40	10	$	53.65

Schedule of information about options outstanding

The following table summarizes information about options outstanding at December 31, 2021:

	Options Outstanding				Options Exercisable
		Weighted Average	Weighted Average			Weighted Average
	Number	Remaining Contractual	Exercise		Number	Exercise
Range of Exercise Prices	Outstanding	Life (years)	Price		Exercisable	Price
	(Options in thousands)
$37.41-$37.41	1	0.59	$	37.41	1	$	37.41
$54.76-$54.76	1	1.59		54.76	1		54.76
$57.47–$57.47	2	2.58		57.47	2		57.47
	4	1.84	$	52.92	4	$	52.92

Schedule of the Company's RSU activity and related information

	Year Ended December 31,
	2021					2020				2019
		Weighted			Weighted			Weighted			Weighted
		Average			Average			Average			Average
		Purchase			Intrinsic			Purchase			Purchase
	RSUs	Price			Value	RSUs		Price		RSUs	Price
	(RSU’s in thousands)
Outstanding at beginning of year	95	$	64.54				110	$	57.91	154	$	45.02
Granted	25		97.98				28		69.76	37		63.77
Settled	(34)		61.38				(40)		49.76	(79)		35.63
Cancelled/Forfeitures	(1)		77.03				(3)		65.69	(2)		56.25
Outstanding at end of year	85	$	75.34	$	118.83	$	95	$	64.54	110	$	57.91
Vested at end of year	31	$	65.29	$	128.88	$	32	$	61.89	35	$	52.67

Restricted stock and deferred shares

Schedule of information about RSUs outstanding

The following table summarizes information about RSUs outstanding at December 31, 2021:

	RSUs Outstanding			RSUs Vested
		Weighted Average			Weighted Average
	Number	Purchase		Number	Purchase
Range of Purchase Prices	Outstanding	Price		Vested	Price
	(RSUs in thousands)
$35.41-$63.77	35	$	63.69	23	$	63.64
$69.76-$97.98	50		83.52	8		69.76
	85	$	75.34	31	$	65.29

Performance stock units

Schedule of unvested performance shares activity and related information

	Year Ended December 31,
	2021			2020			2019
		Weighted			Weighted			Weighted
		Average			Average			Average
		Grant Date			Grant Date			Grant Date
	Shares	Fair Value		Shares	Fair Value		Shares	Fair Value
	(Shares in thousands)
Unvested at beginning of year	208	$	78.06	238	$	73.84	249	$	66.15
Granted	61		113.37	94		70.65	88		77.58
Vested	(85)		81.50	(97)		60.45	(82)		55.27
Cancelled/Forfeitures	(6)		83.53	(27)		78.59	(17)		71.50
Unvested at end of year	178	$	88.32	208	$	78.06	238	$	73.84