STOCK COMPENSATION PLANS (Tables)

12 Months Ended

Dec. 31, 2016

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of stock compensation expense and related net tax benefit

The following table summarizes the total share-based compensation expense and the related net tax benefit associated with its various employee share-based compensation plans for the years ended December 31, 2016, 2015 and 2014:

($ in thousands)	Year Ended December 31,
	2016		2015		2014
Stock compensation costs	$	22,102	$	16,502	$	13,883
Net tax benefit recognized in equity for stock compensation plans	$	1,055	$	3,291	$	6,513

Schedule of information related to stock options

The following table presents information related to stock options for the years ended December 31, 2016, 2015 and 2014:

($ in thousands)	Year Ended December 31,
	2016		2015		2014
Cash proceeds from options exercised	$	—	$	874	$	4,937
Net tax benefit recognized from options exercised	$	—	$	320	$	1,398
Total intrinsic value of options exercised	$	—	$	760	$	3,546

Summary of activity for time-based and performance-based restricted stock units

The following table presents a summary of the activity for the Company’s time-based and performance-based RSUs during the year ended December 31, 2016 based on the target amount of awards:

	2016
	Time-Based RSUs				Performance-Based RSUs
	Shares		Weighted Average Grant Date Fair Value		Shares		Weighted Average Grant Date Fair Value
Outstanding at beginning of year	933,312		$	36.83	389,358		$	34.21
Granted	529,385		31.86		159,407		29.18
Vested	(125,608	)	25.78		(138,019	)	25.25
Forfeited	(118,375	)	35.80		—		—
Outstanding at end of year	1,218,714		$	35.92	410,746		$	35.27