EMPLOYEE COMPENSATION PLANS (TABLES)

12 Months Ended

Dec. 31, 2017

EMPLOYEE COMPENSATION PLANS [Abstract]

Summary of non-vested RSU's and performance-based RSU's

		Weighted
		Average
		Grant Date
	Shares	Fair Value
Unvested as of December 31, 2016	1,167,621	$	25.29
Granted	731,817	$	29.56
Vested	(439,601)	$	24.25
Cancellations/expirations	(169,410)	$	26.77
Unvested as of December 31, 2017	1,290,427	$	27.87

Schedule of stock option assumptions

	Year Ended December 31,
	2011
Risk-free interest rate			2.1	%
Expected life in years	1.3	-	2.7
Expected volatility			54.4	%
Dividend yield			—	%
Weighted-average volatility			54.4	%

Summary of stock option activity

				Weighted
		Weighted		Average	Aggregate
		Average		Remaining	Intrinsic
		Exercise		Contract	Value
	Shares	Price		Term in Years	(000’s)
Outstanding as of December 31, 2016	191,666	$	22.83	3.23
Exercises	(60,000)	$	35.81		$	194
Post-vest cancellations/expirations	(16,666)	$	17.31
Outstanding as of December 31, 2017	115,000	$	16.86	3.46
Vested and exercisable as of December 31, 2017	15,000	$	13.87	0.71	$	396