EARNINGS PER SHARE AND DIVIDEND DATA (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income (Numerator) [Abstract]
Income available to common shareholders	$ 94,115	$ 84,295	$ 37,569
Income available to common shareholders plus assumed exercise	$ 94,115	$ 84,295	$ 37,569
Shares (Denominator) [Abstract]
Income available to common shareholders (in shares)	95,048,000	93,774,000	83,486,000
Effect of dilutive stock options (in shares)	284,000	90,000	23,000
Income available to common shareholders plus assumed exercise (in shares)	95,332,000	93,864,000	83,509,000
Per share amount [Abstract]
Income available to common shareholders (in dollars per share)	$ 0.99	$ 0.90	$ 0.45
Income available to common shareholders plus assumed exercise all outstanding share-based awards (in dollars per share)	$ 0.99	$ 0.90	$ 0.45
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from diluted shares (in shares)	1,200,000.00	2,900,000.00	2,800,000.00
Weighted average exercise price of antidilutive securities (in dollars per share)	$ 23.81	$ 20.64	$ 21.75
Other Equity Awards [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from diluted shares (in shares)	0	0	36,000.00