STOCK BASED COMPENSATION (Tables)

3 Months Ended

Mar. 31, 2013

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, 2013	1,472,602		$	44.45
Options granted	29,500		$	69.48
Options exercised	(42,573	)	$	36.09		$	1,408
Options canceled/forfeited	(19,410	)	$	50.89
Outstanding options at March 31, 2013	1,440,119		$	45.12	5.28	$	38,492
Exercisable options at March 31, 2013	655,389		$	36.97	4.10	$	22,857

					Weighted
			Weighted		Average	Aggregate
	Number of		Average		Remaining	Intrinsic
	Options		Exercise		Contractual	Value
	Outstanding		Price		Life	(in 000’s)
Outstanding options at January 1, 2012	1,280,866		$	43.23
Options granted	34,500		$	72.61
Options exercised	(50,140	)	$	41.28		$	1,544
Options canceled/forfeited	(2,010	)	$	45.10
Outstanding options at March 31, 2012	1,263,216		$	44.11	5.53	$	34,810
Exercisable options at March 31, 2012	568,016		$	39.80	4.44	$	18,087

Schedule of stock option assumptions for fair value estimate

	2013			2012
Weighted-average fair value of grants	$	13.37		$	14.68
Risk-free interest rates	1.14		%	1.00		%
Dividend yield	1.98		%	1.92		%
Expected volatility	25.52		%	25.79		%
Expected option life	5.65 years			5.80 years