NET INCOME PER SHARE (Tables)

12 Months Ended

Dec. 31, 2014

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):

	For the Year Ended December 31,
	2014	2013	2012
Weighted average number of basic common shares outstanding	52,301	50,924	49,840
Weighted average dilutive stock options, restricted stock units and performance share units	340	382	501
Assumed conversion of Convertible Senior Notes	382	1,107	985
Weighted average number of diluted common and common equivalent shares outstanding	53,023	52,413	51,326
Anti-dilutive potential common shares	2,574	2,384	2,202