Stock Compensation Plans (Tables)

6 Months Ended

Jun. 30, 2023

Share-Based Payment Arrangement [Abstract]

Summary of Stock Compensation Expense and Related Net Tax Benefit

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

	Three Months Ended June 30,				Six Months Ended June 30,
($ in thousands)	2023		2022		2023		2022
Stock compensation costs	$	9,364	$	8,576	$	20,439	$	17,009
Related net tax benefits for stock compensation plans	$	525	$	109	$	8,815	$	5,268

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 six months ended June 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	483,906	74.32		96,271	57.50
Vested	(518,628)	40.56		(152,558)	39.39
Forfeited	(33,925)	73.98		—	—
Outstanding, June 30, 2023	1,228,219	$	74.28	276,223	$	70.99