NET INCOME PER SHARE (DILUTED SHARES TABLE) (DETAILS) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Weighted Average Number of Shares Outstanding Reconciliation [Abstract]
Shares used in basic earnings per share calculation	50,045	52,347
Effect of dilutive securities:
Stock options	411	391
Restricted stock units	517	479
Total effects of dilutive securities	928	870
Shares used in dilutive earnings per share calculation	50,973	53,217