NET INCOME PER SHARE (Tables)

9 Months Ended

Sep. 30, 2019

Earnings Per Share [Abstract]

Reconciliation of the weighted average number of shares outstanding used in calculating diluted earnings per share

A reconciliation of the weighted-average number of shares outstanding used in calculating diluted earnings per share is as follows (in thousands):

	Three Months Ended September 30,		Nine Months Ended September 30,
	2019	2018	2019	2018
Weighted-average number of basic common shares outstanding	42,389	47,268	43,540	47,887
Weighted-average dilutive stock options, restricted stock units and performance share units	198	230	191	270
Assumed conversion of convertible senior notes	244	253	216	373
Weighted-average number of diluted common and common equivalent shares outstanding	42,831	47,751	43,947	48,530
Anti-dilutive potential common shares	1,264	1,428	1,299	1,366