STOCK-BASED COMPENSATION (Details) (USD $)	3 Months Ended	6 Months Ended		3 Months Ended	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014 Restricted Stock Awards	Jun. 30, 2014 Restricted Stock Awards	Jun. 30, 2014 Stock Options	Jun. 30, 2013 Stock Options
Summary of Stock-based Compensation Plans
Total compensation expense, before taxes	$ 3,400,000		$ 5,900,000	$ 3,600,000	$ 6,700,000
Total compensation expense, net income	2,000,000		3,400,000	2,100,000	3,900,000
Cash proceeds from stock option exercises						283,000	537,000
Net tax benefit recognized in equity for stock compensation plans		$ 3,787,000	$ 2,803,000
Incentive shares available to be issued		3,723,456