STOCK-BASED AWARDS (Tables)

3 Months Ended

Mar. 31, 2019

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Summary of Stock Based Compensation

Stock-based compensation expense was as follows (in thousands):

	Three months ended March 31,
	2019		2018
Total stock-based compensation expense	$	3,985	$	6,435

Summary of Restricted Stock Award Activity

The following table summarizes restricted stock award activity during the three months ended March 31, 2019 (in thousands):

	Three months ended March 31, 2019
	Units		Weighted Average Grant Date Fair Value
Outstanding—beginning of year	559		$	44.08
Granted at fair value	960		17.92
Vested	(242	)	35.89
Forfeited	(60	)	21.62
Outstanding—end of period	1,217		$	26.19