Stock Compensation Plans (Tables)

9 Months Ended

Sep. 30, 2020

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 (deficiencies) benefits associated with the Company’s various employee share-based compensation plans for the three and nine months ended September 30, 2020 and 2019:

($ in thousands)	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
Stock compensation costs	$	7,921	$	7,487	$	22,201	$	23,012
Related net tax (deficiencies) benefits for stock compensation plans	$	(14)	$	15	$	(1,589)	$	4,723

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, 2020. The number of outstanding performance-based RSUs stated below assumes the associated performance targets will be met at the target level.

	Time-Based RSUs			Performance-Based RSUs
	Shares	Weighted-Average Grant Date Fair Value		Shares	Weighted-Average Grant Date Fair Value
Outstanding, January 1, 2020	1,139,868	$	57.78	386,483	$	60.13
Granted	657,593	40.51		165,084	39.79
Vested	(253,726)	54.49		(131,597)	56.59
Forfeited	(144,944)	53.32		—	—
Outstanding, September 30, 2020	1,398,791	$	50.72	419,970	$	53.24

The following table presents a summary of the activities for the Company’s time-based RSUs that will be settled in cash for the nine months ended September 30, 2020:

	Shares
Outstanding, January 1, 2020	11,638
Granted	11,215
Vested	—
Forfeited	(764)
Outstanding, September 30, 2020	22,089