EARNINGS PER SHARE (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income for EPS [Abstract]
Net Income (Loss) Available to Common Stockholders, Basic	$ 53,387	$ 98,910	$ 84,401
Calculation of shares [Abstract]
Weighted average basic shares	145,602,670	150,566,098	151,386,614
Share-based compensation (in shares)	441,388	293,897	267,032
Weighted average fully diluted shares	146,044,058	150,859,995	151,653,646
Earnings Per Share, Basic and Diluted [Abstract]
Basic (in dollars per share)	$ 0.37	$ 0.66	$ 0.56
Diluted (in dollars per share)	$ 0.37	$ 0.66	$ 0.56
Antidilutive Options Excluded from Earnings Per Share Computation [Abstract]
Stock Options	3,429,793	4,322,167	5,039,081
Exercise Price Low Range	$ 8.69	$ 7.07	$ 5.85
Exercise Price High Range	$ 21.49	$ 21.49	$ 21.49