REPURCHASES OF COMMON STOCK (Details) - USD ($) $ in Thousands, shares in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2014
Equity, Class of Treasury Stock [Line Items]
Common stock repurchased (in shares)	0.9		0.0	1.4	0.3
Common stock repurchased		$ 49,600	$ 0	$ 75,900	$ 25,000
Available for repurchase under the repurchase program	$ 271,500