Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2023

Share-Based Payment Arrangement [Abstract]

Summary of Company's Option Activity

A summary of the Company’s option activity and related information for the three years ended December 31, 2023 is as follows:

	Number of options			Weighted- average price		Weighted- average remaining contractual term (in years)		Aggregate intrinsic value (in millions)
Balance at December 31, 2020		409,410		$	29.33
Options granted		—			—
Options exercised		(133,020	)		28.57
Options cancelled/forfeited/expired		(1,760	)		34.57
Balance at December 31, 2021		274,630			29.66
Options granted		—			—
Options exercised		(135,280	)		25.61
Options cancelled/forfeited/expired		—			—
Balance at December 31, 2022		139,350			33.59
Options granted		—			—
Options exercised		(139,110	)		33.51
Options cancelled/forfeited/expired		—			—
Balance at December 31, 2023		240		$	34.57		0.17	$	0.02
Exercisable at December 31, 2023		240		$	34.57		0.17	$	0.02
Expected to vest after December 31, 2023		—		$	—		—	$	—

Options Outstanding and Options Exercisable by Exercise Price with Weighted-Average Remaining Contractual Life for Options Outstanding and Weighted-Average Exercise Price

The following table indicates the options outstanding and options exercisable by exercise price with the weighted-average remaining contractual life for the options outstanding and the weighted-average exercise price at December 31, 2023:

	Options Outstanding						Options Exercisable
Exercise price	Number outstanding at December 31, 2023		Weighted-average remaining contractual life (Years)		Weighted-average grant date value		Number exercisable at December 31, 2023		Weighted-average grant date value
$30 – 35		240		0.17	$	34.57		240	$	34.57
$30 – 35		240		0.17	$	34.57		139,350	$	34.57

Summary of Company's Restricted Stock Units Activity

The following table summarizes the activity of the Company’s RSUs, which includes service-based and performance-based awards, for the three years ended December 31, 2023:

				Weighted-		Aggregate
				average		intrinsic
	Number			grant date		value
	of shares			fair value		(in millions)
Balance at December 31, 2020		225,970		$	57.06
RSUs granted		116,326			72.75
RSUs vested		(116,242	)		53.32
RSUs cancelled/forfeited/expired		(8,646	)		52.78
Balance at December 31, 2021		217,408			67.63
RSUs granted		95,028			77.79
RSUs vested		(114,274	)		58.30
RSUs cancelled/forfeited/expired		(10,754	)		70.10
Balance at December 31, 2022		187,408			76.74
RSUs granted		92,320			103.56
RSUs vested		(86,402	)		50.98
RSUs cancelled/forfeited/expired		(21,649	)		82.69
Balance at December 31, 2023		171,677		$	92.18	$	27.4