STOCK-BASED COMPENSATION (Tables)

12 Months Ended

Dec. 31, 2018

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock Option Activity

The following table summarizes the stock option activity during the year ended December 31, 2018 for all the grants under the Equity Compensation Plan (in thousands, except share and per share data):

	Options		Weighted Average Exercise Price
Outstanding at January 1, 2018		500	$	10.04
Granted		—		—
Exercised		—		—
Forfeited/ Expired		—		—
Cancelled		—		—
Outstanding at December 31, 2018		500		10.04
Vested and expected to vest		500		10.04
Exercisable at December 31, 2018		500	$	10.04

Summary of Stock Options Outstanding and Exercisable By Price Range

A summary of stock options outstanding and exercisable by price range at December 31, 2018 is as follows (in thousands, except share and per share data):

		Outstanding and Exercisable
Exercise Price		Number of Options Outstanding at December 31, 2018		Weighted Average Remaining Contractual Life (Years)		Weighted Average Exercise Price		Aggregate Intrinsic Value (A)
$	10.04		500		0.5	$	10.04	$	42

(A) The difference between the stock option’s exercise price and the closing price of common stock at December 31, 2018.

Restricted Stock and Units Activity

The following table summarizes the activity related to restricted stock unit (“RSU”) share based payment awards:

	Number of Shares			Weighted- Average Grant-Date Fair Value
Unvested, January 1, 2018		110,683		$	88.91
Granted		51,968			115.48
Vested		(69,670	)		97.14
Forfeited		(600	)		103.09
Unvested, December 31, 2018		92,381		$	97.56

The following table summarizes the activity related to restricted stock award (“RSA”) share based payment awards:

	Number of Shares			Weighted- Average Grant-Date Fair Value
Unvested, January 1, 2018		579,937		$	46.72
Granted		2,456			122.15
Vested		(172,444	)		47.75
Unvested, December 31, 2018		409,949		$	46.74

Schedule of Nonvested Performance-Based Units Activity

The following table summarizes the activity related to performance unit awards (“PSU”) share based payment awards:

	Number of Shares			Weighted- Average Grant-Date Fair Value
Unvested, January 1, 2018		73,315		$	62.36
Granted		40,601			119.62
Vested		(61,186	)		45.19
Unvested, December 31, 2018		52,730		$	86.43