Stock-Based Compensation Plans (Tables)

9 Months Ended

Sep. 30, 2023

Share-Based Payment Arrangement, Noncash Expense [Abstract]

A summary of the Plans’ stock option activity for the nine months ended September 30, 2023 and September 30, 2022 is presented below:


Stock Options	Common Shares	Weighted Average Strike Price		Remaining Contractual Term (1)	Intrinsic Value (2) (in thousands)
Outstanding at January 1, 2023	68,093	$	41.14
Granted	—	—
Exercised	(54,218)	40.87
Forfeited or canceled	—	—
Outstanding at September 30, 2023	13,875	$	42.18	4.2	$	462
Exercisable at September 30, 2023	13,875	$	42.18	4.2	$	462


Stock Options	Common Shares	Weighted Average Strike Price		Remaining Contractual Term (1)	Intrinsic Value (2) (in thousands)
Outstanding at January 1, 2022	193,447	$	41.62

Granted	—	—
Exercised	(88,355)	42.30
Forfeited or canceled	(1,430)	40.87
Outstanding at September 30, 2022	103,662	$	41.04	1.0	$	4,199
Exercisable at September 30, 2022	103,662	$	41.04	1.0	$	4,199

(1)Represents the remaining weighted average contractual life in years.

(2)Aggregate intrinsic value represents the total pre-tax intrinsic value (i.e., the difference between the Company’s stock price on the last trading day of the quarter and the option exercise price, multiplied by the number of shares) that would have been received by the option holders if they had exercised their options on the last day of the quarter. Options with exercise prices above the stock price on the last trading day of the quarter are excluded from the calculation of intrinsic value. The intrinsic value will change based on the fair market value of the Company’s stock.

Schedule of Plans' Restricted and Performance Share Award Activity

A summary of the Plans’ restricted share activity for the nine months ended September 30, 2023 and September 30, 2022 is presented below:


	Nine months ended September 30, 2023			Nine months ended September 30, 2022
Restricted Shares	Common Shares	Weighted Average Grant-Date Fair Value		Common Shares	Weighted Average Grant-Date Fair Value
Outstanding at January 1	610,155	$	73.21	476,813	$	61.33
Granted	268,142	88.18		223,559	95.98
Vested and issued	(117,365)	65.51		(61,333)	63.85
Forfeited or canceled	(12,491)	83.47		(18,632)	75.26
Outstanding at September 30	748,441	$	79.61	620,407	$	73.15
Vested, but deferred, at September 30	98,747	$	53.46	96,554	$	52.94

A summary of the Plans’ performance-based stock award activity, based on the target level of the awards, for the nine months ended September 30, 2023 and September 30, 2022 is presented below:


	Nine months ended September 30, 2023			Nine months ended September 30, 2022
Performance-based Stock	Common Shares	Weighted Average Grant-Date Fair Value		Common Shares	Weighted Average Grant-Date Fair Value
Outstanding at January 1	545,379	$	70.30	557,255	$	62.94
Granted	189,219	92.37		160,463	97.15
Added by performance factor at vesting	23,161	63.64		—	—
Vested and issued	(178,203)	63.64		—	—
Forfeited or canceled	(19,289)	82.14		(172,001)	71.51
Outstanding at September 30	560,267	$	79.18	545,717	$	70.30
Vested, but deferred, at September 30	36,465	$	45.08	35,561	$	44.21