NET INCOME PER SHARE (Tables)

12 Months Ended

Dec. 31, 2013

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,
	2013	2012	2011
Weighted average number of basic common shares outstanding	50,924	49,840	49,654
Weighted average dilutive stock options, restricted stock units and performance share units	382	501	828
Assumed conversion of Convertible Senior Notes	1,107	985	729
Weighted average number of diluted common and common equivalent shares outstanding	52,413	51,326	51,211
Anti-dilutive potential common shares	2,384	2,202	1,453