Stock Compensation Plans (Tables)

9 Months Ended

Sep. 30, 2023

Share-Based Payment Arrangement [Abstract]

Summary of Stock Compensation Expense and Related Net Tax (Deficiency) Benefit

The following table presents a summary of the total share-based compensation expense and the related net tax (deficiencies) benefits associated with the Company’s various employee share-based compensation plans for the three and nine months ended September 30, 2023 and 2022:

	Three Months Ended September 30,				Nine Months Ended September 30,
($ in thousands)	2023		2022		2023		2022
Stock compensation costs	$	9,495	$	12,329	$	29,934	$	29,338
Related net tax (deficiencies) benefits for stock compensation plans	$	(18)	$	1	$	8,797	$	5,269

Summary of Activity for Time-Based and Performance-Based Restricted Stock Units

The following table presents a summary of the activities for the Company’s time-based and performance-based RSUs that will be settled in shares for the nine months ended September 30, 2023. The number of performance-based RSUs stated below reflects the number of awards granted on the grant date.

	Time-Based RSUs			Performance-Based RSUs
	Shares	Weighted-Average Grant Date Fair Value		Shares	Weighted-Average Grant Date Fair Value
Outstanding, January 1, 2023	1,296,866	$	60.77	332,510	$	60.40
Granted	500,180	73.73		96,271	57.50
Vested	(522,029)	40.79		(152,558)	39.39
Forfeited	(53,379)	74.00		—	—
Outstanding, September 30, 2023	1,221,638	$	74.04	276,223	$	70.99