SHARE-BASED COMPENSATION (Details) (Time Based And Performance Based Shares [Member], Employee [Member], USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Time Based And Performance Based Shares [Member] | Employee [Member]
Share-based compensation
Shares granted	557		350,550
Weighted average grant date fair value (in dollars per share)	$ 26.97		$ 23.59
Total stock-based compensation cost	$ 1.9	$ 1.5	$ 5.6	$ 4.3
Total unrecognized compensation cost	$ 10.8		$ 10.8
Unrecognized compensation cost weighted-average period			1 year 9 months 18 days