STOCK BASED COMPENSATION (Tables)

9 Months Ended

Sep. 30, 2019

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, 2019	1,964,880	$	54.24
Options granted	324,525	$	81.27
Options exercised	(493,615)	$	45.61		$	18,157
Options canceled/forfeited	(59,050)	$	60.92
Outstanding options at September 30, 2019	1,736,740	$	61.52	5.43	$	54,515
Exercisable options at September 30, 2019	622,290	$	52.78	4.03	$	24,975
				Weighted
		Weighted		Average	Aggregate
	Number of	Average		Remaining	Intrinsic
	Options	Exercise		Contractual	Value
	Outstanding	Price		Life	(in 000’s)
Outstanding options at January 1, 2018	2,257,015	$	46.80
Options granted	401,250	$	64.31
Options exercised	(685,810)	$	36.72		$	23,603
Options canceled/forfeited	(15,600)	$	61.44
Outstanding options at September 30, 2018	1,956,855	$	53.81	5.50	$	48,476
Exercisable options at September 30, 2018	678,905	$	45.60	4.03	$	22,388

Schedule of stock option assumptions for fair value estimate

	2019			2018
Weighted-average fair value of grants	$	13.47		$	10.38
Risk-free interest rates		2.41	%		2.69	%
Dividend yield		2.69	%		3.15	%
Expected volatility		22.71	%		22.88	%
Expected option life		4.95	years		5.06	years