SHARE-BASED PAYMENT (Tables)

12 Months Ended

Dec. 31, 2016

SHARE-BASED PAYMENT

Schedule of Stock Compensation Expense

Components of stock compensation expense (in thousands)	2016		2015		2014
Restricted shares	$	10,272	$	8,214	$	7,105
Stock options		1,768		1,957		1,878
2014 PSP		3,625		3,913		1,011
2016 PSP		2,812		—		—
Total stock compensation expense	$	18,477	$	14,084	$	9,994
Excess tax benefit (shortfall) recognized	$	631	$	1,410	$	(38)

Schedule of Restricted Share Activity

		Weighted-
		Average
		Grant-date
Restricted Shares	Shares	Fair Value
Nonvested at January 1, 2016	1,312,774	$	19.99
Granted	645,533		21.51
Vested	(452,856)		19.38
Forfeited	(23,968)		27.78
Nonvested at December 31, 2016	1,481,483	$	20.71

Schedule of Stock Option Activity

				Weighted-
		Weighted-		Average	Aggregate
		Average		Remaining	Intrinsic
		Exercise		Contract Life	Value
Stock Options	Options	Price		(Years)	(in thousands)
Outstanding at January 1, 2016	1,106,352	$	16.30
Granted	207,180		20.40
Exercised	(18,157)		26.97
Forfeited	—		—
Expired	—		—
Outstanding at December 31, 2016	1,295,375	$	16.97	7.0	$	18,436
Exercisable at December 31, 2016	815,080	$	16.14	6.2	$	12,279

Schedule of Stock Options Valuation Assumptions

	2016			2015			2014
Estimated option life		6.00 years			6.00 years			6.00 years
Risk free interest rate		1.31	%		1.68	%		1.86	%
Expected volatility		34.42	%		33.48	%		35.35	%
Expected dividend rate		0.00	%		0.00	%		0.00	%
Weighted average grant date fair value per share of options granted	$	7.21		$	5.90		$	6.35