STOCK-BASED COMPENSATION (Tables)

12 Months Ended

Dec. 31, 2017

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

The following table summarizes the stock option activity during the year ended December 31, 2017 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, 2017		3,500		$	15.99
Granted		—			—
Exercised		(2,250	)		16.89
Forfeited/ Expired		(750	)		17.24
Cancelled		—			—
Outstanding at December 31, 2017		500			10.04
Vested and expected to vest		500			10.04
Exercisable at December 31, 2017		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, 2017 is as follows (in thousands, except share and per share data):

Outstanding and Exercisable

Exercise Price

Number of

Options

Outstanding at

December 31,

2017

Weighted

Average

Remaining

Contractual

Life (Years)

Weighted

Average

Exercise

Price

Aggregate

Intrinsic

Value (A)

$10.04-$15.06

500

1.5

10.04

(A)	The difference between the stock option’s exercise price and the closing price of common stock at December 31, 2017.

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, 2017		131,119		$	45.44
Granted		69,497			116.58
Vested		(84,407	)		46.38
Forfeited		(5,526	)		54.99
Unvested, December 31, 2017		110,683		$	88.91

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, 2017		749,955		$	46.64
Granted		3,604			83.25
Vested		(173,022	)		47.14
Forfeited/ Canceled		(600	)		49.70
Unvested, December 31, 2017		579,937		$	46.72

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, 2017		93,769		$	46.02
Granted		24,664			105.65
Vested		(45,118	)		39.72
Forfeited		—			—
Unvested, December 31, 2017		73,315		$	62.36