STOCK-BASED COMPENSATION (Tables)

3 Months Ended

Mar. 31, 2020

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of stock-based compensation

	Three Months Ended March 31,
	2020		2019
Stock-based compensation expense	$	3,048	$	3,199

Summary of stock option activity

Changes in our outstanding stock options during the three months ended March 31, 2020 were as follows:

	Three Months Ended March 31, 2020
		Weighted-
		Average
	Number of	Exercise Price
	Options	per Share
Options outstanding at beginning of period	185	$	21.56
Options exercised	(5)	$	15.73
Options forfeited	—	$	—
Options expired	(2)	$	15.65
Options outstanding at end of period	178	$	21.79
Options vested during the year	—

Restricted Stock Units (RSUs) [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Summary of stock option activity

Changes in the outstanding RSU awards during the three months ended March 31, 2020 were as follows:

	Three Months Ended March 31, 2020
		Weighted-
		Average
		Grant Date
	Number of RSUs	Fair Value
RSUs outstanding at beginning of period	534	$	56.56
RSUs granted	293	$	59.32
RSUs vested	(94)	$	58.47
RSUs forfeited	(13)	$	61.29
RSUs outstanding at end of period	720	$	57.34