Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2018

Share-based Compensation [Abstract]

Schedule of stock option plans activity

Additional information relating to the Company’s stock option plans follows:

	2018		2017		2016
Options outstanding at beginning of year	63		91		169
Options exercised	—		(28	)	(78	)
Options forfeited and expired	—		—		—
Options outstanding at end of year	63		63		91
Options exercisable at end of year	63		63		90
Option prices per share:
Options exercised during the year	$	—	57.34-66.14		28.37-93.65
Options forfeited and expired during the year	$	—	—		—
Options outstanding at end of year	57.34-66.14		57.34-66.14		57.34-66.14
Options exercisable at end of year	57.34-66.14		57.34-66.14		57.34-66.14

Summary of the stock options under the 2002, 2007 and 2012 plans

A summary of the Company’s options under it’s long-term incentive plans as of December 31, 2018, and changes during the year then ended is presented as follows:

	Shares	Weighted average exercise price		Weighted average remaining contractual term (years)	Aggregate intrinsic value
Options outstanding, December 31, 2017	63	$	62.86
Granted	—	—
Exercised	—	—
Forfeited and expired	—	—
Options outstanding, December 31, 2018	63	$	62.86	2.8	$	3,415
Vested and expected to vest as of December 31, 2018	63	$	62.86	2.8	$	3,415
Exercisable as of December 31, 2018	63	$	62.86	2.8	$	3,415

Summary of stock options outstanding

The following table summarizes information about the Company’s stock options outstanding as of December 31, 2018:

	Outstanding				Exercisable
Exercise price range	Number of shares	Average life	Average price		Number of shares	Average price
$57.34-$57.34	23	2.15	57.34		23	57.34
$66.14-$66.14	40	3.14	66.14		40	66.14
Total	63	2.77	$	62.86	63	$	62.86

Summary of RSUs under the 2007 and 2012 plans

A summary of the Company’s RSUs under the Company’s long-term incentive plans as of December 31, 2018, and changes during the year then ended is presented as follows:

	Shares		Weighted average grant date fair value		Weighted average remaining contractual term (years)	Aggregate intrinsic value
Restricted Stock Units outstanding, December 31, 2017	555		$	147.28
Granted	136		231.25
Released	(235	)	156.56
Forfeited	(10	)	211.16
Restricted Stock Units outstanding, December 31, 2018	446		$	166.56	1.1	$	51,501
Expected to vest as of December 31, 2018	440				1.1	$	50,746

Additional information for RSUs under the 2007 and 2012 plans

Additional information relating to the Company’s RSUs under the Company’s long-term incentive plans are as follows:

	2018		2017		2016
Restricted Stock Units outstanding, January 1	555		695		750
Granted	136		154		187
Released	(235	)	(284	)	(226	)
Forfeited	(10	)	(10	)	(16	)
Restricted Stock Units outstanding, December 31	446		555		695
Expected to vest as of December 31	440		546		682