STOCKHOLDERS' EQUITY (Tables)

3 Months Ended

Mar. 31, 2016

The Company’s results for the three months ended March 31, 2016 and 2015 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 March 31,
	2016			2015
Cost of sales	$	260		$	212
Operating expenses		1,937			962
Net earnings		(1,393	)		(760	)

Summary of stock option activity

Option activity for the three months ended March 31, 2016 and 2015 is summarized below:

For the three months ended March 31, 2016	Shares (000s)			Weighted Average Exercise Price		Aggregate Intrinsic Value		Weighted Average Remaining Contractual Term
Outstanding as of December 31, 2015		1,017		$	37.29	$	23,927
Granted		333			60.71
Exercised		(39	)		34.11
Forfeited		-			-
Outstanding as of March 31, 2016		1,311		$	43.36	$	24,481		6.7
Exercisable as of March 31, 2016		781		$	32.98	$	22,692		4.9

For the three months ended March 31, 2015	Shares (000s)			Weighted Average Exercise Price		Aggregate Intrinsic Value		Weighted Average Remaining Contractual Term
Outstanding as of December 31, 2014		1,470		$	27.35	$	57,742
Granted		197			58.52
Exercised		(192	)		16.52
Forfeited		(1	)		45.08
Outstanding as of March 31, 2015		1,474		$	32.93	$	33,736		6.2
Exercisable as of March 31, 2015		1,040		$	24.75	$	31,849		4.9

Other information pertaining to stock option activity

Other information pertaining to option activity during the three months ended March 31, 2016 and 2015 was as follows:

	Three Months Ended March 31,
	2016			2015
Weighted-average fair value of options granted		$	18.46		$	18.42
Total intrinsic value of stock options exercised ($000s)		$	1,015		$	8,039

Non-vested restricted stock activity

Non-vested restricted stock activity for the three months ended March 31, 2016 and 2015 is summarized below:

Three months ended March 31, 2016	Shares (000s)			Weighted Average Grant Date Fair Value
Non-vested balance as of December 31, 2015		150		$	47.46
Granted		18			60.85
Vested		(25	)		29.06
Forfeited		-			-
Non-vested balance as of March 31, 2016		143		$	52.41

Three months ended March 31, 2015	Shares (000s)			Weighted Average Grant Date Fair Value
Non-vested balance as of December 31, 2014		134		$	38.13
Granted		19			58.52
Vested		(10	)		14.37
Forfeited		-			-
Non-vested balance as of March 31, 2015		143		$	42.53

Non-vested performance share activity

Non-vested performance share activity for the three months ended March 31, 2016 and 2015 is summarized below:

Three months ended March 31, 2016	Shares (000s)		Weighted Average Grant Date Fair V alue
Non-vested balance as of December 31, 2015		20	$	58.77
Granted		21		63.15
Vested		-		-
Forfeited		-		-
Non-vested balance as of March 31, 2016		41	$	61.03

Three months ended March 31, 2015	Shares (000s)		Weighted Average Grant Date Fair Value
Non-vested balance as of December 31, 2014		-	$	-
Granted		24		58.78
Vested		-		-
Forfeited		-		-
Non-vested balance as of March 31, 2015		24	$	58.78