STOCKHOLDERS' EQUITY (Tables)

9 Months Ended

Sep. 30, 2018

The Company’s results for the three and nine months ended September 30, 2018 and 2017 reflected the following stock-based compensation cost, and such compensation cost had the following effects on net earnings:

	Increase/(Decrease) for the Three Months Ended September 30,
	2018			2017
Cost of sales	$	242		$	174
Operating expenses		1,507			1,288
Net earnings		(1,339	)		(944	)

	Increase/(Decrease) for the Nine Months Ended September 30,
	2018			2017
Cost of sales	$	729		$	318
Operating expenses		4,479			4,028
Net earnings		(3,996	)		(2,775	)

Stock Option Activity

Option activity for the nine months ended September 30, 2018 and 2017 is summarized below:

For the nine months ended September 30, 2018	Shares (000s)			Weighted Average Exercise Price		Aggregate Intrinsic Value		Weighted Average Remaining Contractual Term
Outstanding as of December 31, 2017		946		$	55.44	$	24,714
Granted		148			74.57
Exercised		(191	)		42.74
Forfeited		(2	)		75.44
Cancelled		(1	)		28.63
Outstanding as of September 30, 2018		900		$	61.27	$	45,745		6.5
Exercisable as of September 30, 2018		496		$	49.88	$	30,875		5.1

For the nine months ended September 30, 2017	Shares (000s)			Weighted Average Exercise Price		Aggregate Intrinsic Value		Weighted Average Remaining Contractual Term
Outstanding as of December 31, 2016		1,066		$	45.32	$	41,161
Granted		220			85.23
Exercised		(256	)		37.16
Forfeited		(47	)		71.81
Cancelled		(22	)		57.48
Outstanding as of September 30, 2017		961		$	55.06	$	25,995		6.8
Exercisable as of September 30, 2017		504		$	40.45	$	20,592		5.1

Other Information Pertaining to Stock Option Activity

Other information pertaining to option activity during the three and nine months ended September 30, 2018 and 2017 was as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Weighted-average fair value of options granted	$	-	$	-	$	18.62	$	23.21
Total intrinsic value of stock options exercised ($000s)	$	2,743	$	3,566	$	9,943	$	11,163

Non-vested Restricted Stock Activity

Non-vested restricted stock activity for the nine months ended September 30, 2018 and 2017 is summarized below:

Nine months ended September 30, 2018	Shares (000s)			Weighted Average Grant Date Fair Value
Non-vested balance as of December 31, 2017		66		$	65.66
Granted		40			77.17
Vested		(17	)		57.65
Forfeited		-			-
Non-vested balance as of September 30, 2018		89		$	72.44

Nine months ended September 30, 2017	Shares (000s)			Weighted Average Grant Date Fair Value
Non-vested balance as of December 31, 2016		102		$	54.18
Granted		9			85.40
Vested		(43	)		50.30
Forfeited		(4	)		55.45
Non-vested balance as of September 30, 2017		64		$	61.29

Non-vested Performance Share Activity

Non-vested performance share activity for the nine months ended September 30, 2018 and 2017 is summarized below:

Nine months ended September 30, 2018	Shares (000s)			Weighted Average Grant Date Fair Value
Non-vested balance as of December 31, 2017		39		$	72.62
Granted		32			71.27
Vested		(15	)		58.78
Forfeited		-			-
Non-vested balance as of September 30, 2018		56		$	75.47

Nine months ended September 30, 2017	Shares (000s)			Weighted Average Grant Date Fair Value
Non-vested balance as of December 31, 2016		34		$	61.06
Granted		16			93.85
Vested		-			-
Forfeited		(11	)		69.25
Non-vested balance as of September 30, 2017		39		$	72.62