Stock Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2020

Share-based Payment Arrangement [Abstract]

Schedule of stock compensation expense and related net tax benefits

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 years ended December 31, 2020, 2019 and 2018:

($ in thousands)	Year Ended December 31,
	2020		2019		2018
Stock compensation costs	$	29,237	$	30,761	$	30,937
Related net tax (deficiencies) benefits for stock compensation plans	$	(1,839)	$	4,792	$	5,089

Summary of activities 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 year ended December 31, 2020. The number of outstanding performance-based RSUs provided below assumes that performance 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	680,172	40.61		165,084	39.79
Vested	(290,147)	55.23		(131,597)	56.59
Forfeited	(184,258)	53.61		(21,913)	45.64
Outstanding, December 31, 2020	1,345,635	$	50.22	398,057	$	53.66

Summary of time-based RSU's that will be settled in cash

The following table presents a summary of the activities for the Company’s time-based RSUs that will be settled in cash for the year ended December 31, 2020:

	Shares
Outstanding, January 1, 2020	11,638
Granted	11,215
Vested	—
Forfeited	(1,051)
Outstanding, December 31, 2020	21,802