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EQUITY (Tables)

12 Months Ended

Dec. 31, 2018

EQUITY

Schedule of shares repurchased

				Aggregate
		Shares		Cost			Average
Year ended December 31,		Repurchased		(in thousands)			Repurchase Price
2018		30,427		$	1,577		$	51.82
2017		201,932			10,636			52.67
2016		32,407			2,195			64.72

Schedule of repurchases of shares from employees to satisfy tax withholding and stock exercise obligations

				Aggregate
		Shares		Cost			Average
Year ended December 31,		Repurchased		(in thousands)			Repurchase Price
2018		141,180		$	10,859		$	76.76
2017		32,814			2,348			71.54
2016		38,279			2,775			72.50

Summary of stock option activity

		Year Ended December 31, 2018
							Weighted Average
				Weighted Avg.			Remaining
		Number of		Exercise			Contractual		Aggregate
		Options		Price			Term (Years)		Intrinsic Value
Outstanding at January 1, 2018		200,021		$	41.76
Granted		—			—
Exercised		(158,021)			39.95
Outstanding at December 31, 2018		42,000			48.61		4.1		$	823,515
Vested and expected to vest at December 31, 2018		42,000			48.61		4.1		$	962,840
Exercisable at December 31, 2018		33,250			46.76		3.0		$	823,515

		Year Ended December 31, 2017
							Weighted Average
							Remaining
		Number of		Weighted Avg.			Contractual		Aggregate
		Options		Exercise Price			Term (Years)		Intrinsic Value
Outstanding at January 1, 2017		225,822		$	39.77
Granted		10,000			52.97
Exercised		(35,801)			32.29
Outstanding at December 31, 2017		200,021			41.76		3.6		$	2,780,253
Vested and expected to vest at December 31, 2017		200,021			41.76		3.6		$	2,780,253
Exercisable at December 31, 2017		187,521			40.77		3.6		$	2,757,353

Summary of information relating to options granted and exercised

The following table summarizes information relating to options granted and exercised during the years ended December 31, 2018, 2017 and 2016 (in thousands, except fair value of options granted data):

		2018			2017			2016
Weighted-average fair value of options granted		$	—		$	13.77		$	—
Aggregate intrinsic value of options exercised			5,927			936			1,591
Cash proceeds received upon exercise of options			72			1,030			649
Excess tax benefits from share-based compensation			—			—			591

Schedule of weighted-average assumptions using Black-Scholes option-pricing model for estimating fair value of each option granted

	2017
Risk-free interest rate	1.79	%
Expected dividend yield	1.28	%
Expected life	4.00	years
Expected volatility	34.01	%

Summary of restricted stock activity

The following table summarizes restricted stock activity during the year ended December 31, 2018:

				Weighted Avg.
		Shares		Fair Value
Unvested as of January 1, 2018		214,938		$	68.62
Granted		111,474			59.52
Forfeited		(31,327)			66.53
Vested and issued		(94,432)			66.27
Unvested as of December 31, 2018		200,653		$	65.21

The following table summarizes restricted stock activity during the year ended December 31, 2017:

				Weighted Avg.
		Shares		Fair Value
Unvested as of January 1, 2017		229,040		$	67.13
Granted		95,095			68.09
Forfeited		(12,074)			69.71
Vested and issued		(97,123)			64.01
Unvested as of December 31, 2017		214,938		$	68.62

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