STOCK BASED COMPENSATION (Tables)

6 Months Ended

Jun. 30, 2015

STOCK BASED COMPENSATION

Schedule of stock option activity

				Weighted
		Weighted		Average	Aggregate
	Number of	Average		Remaining	Intrinsic
	Options	Exercise		Contractual	Value
	Outstanding	Price		Life	(in 000’s)
Outstanding options at January 1, 2015	2,892,717	$	26.65
Options granted	465,500	$	49.52
Options exercised	(215,617)	$	18.97		$	6,620
Options canceled/forfeited	(4,560)	$	31.87
Outstanding options at June 30, 2015	3,138,040	$	30.56	5.28	$	65,356
Exercisable options at June 30, 2015	1,441,660	$	22.48	4.02	$	41,674
				Weighted
		Weighted		Average	Aggregate
	Number of	Average		Remaining	Intrinsic
	Options	Exercise		Contractual	Value
	Outstanding	Price		Life	(in 000’s)
Outstanding options at January 1, 2014	2,595,084	$	26.04
Options granted	420,000	$	42.88
Options exercised	(43,872)	$	18.31		$	1,139
Options canceled/forfeited	(740)	$	16.51
Outstanding options at June 30, 2014	2,970,472	$	28.53	5.47	$	51,232
Exercisable options at June 30, 2014	1,300,292	$	22.02	4.21	$	30,894

Schedule of stock option assumptions for fair value estimate

	2015			2014
Weighted-average fair value of grants	$	8.94		$	7.76
Risk-free interest rates		1.54	%		1.70	%
Dividend yield		1.81	%		1.94	%
Expected volatility		22.89	%		23.22	%
Expected option life		5.21	years		5.18	years