STOCKHOLDERS' EQUITY, Earnings (Loss) Per Share Calculations (Details) (USD $) In Thousands, except Per Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Earning per share calculations [Abstract]
Net income	$ 62,432	$ 46,951	$ 179,028	$ 108,215
Less: preferred stock dividends and amortization of preferred stock discount	(1,714)	(6,732)	(5,143)	(19,017)
Net income available to common stockholders	60,718	40,219	173,885	89,198
Effect of dilutive securities [Abstract]
Stock options	0	0	0	0
Restricted stock	34	4	75	10
Convertible preferred stock	1,714	0	5,143	0
Stock warrants	0	0	0	0
Diluted EPS - income available to common stockholders	$ 62,466	$ 40,223	$ 179,103	$ 89,208
Number of shares [Abstract]
Weighted average shares outstanding (in shares)	147,162	146,454	147,013	134,396
Effect of dilutive securities on weighted average shares outstanding [Abstract]
Stock options (in shares)	37	126	74	150
Restricted stock (in shares)	683	430	681	344
Convertible preferred stock (in shares)	5,571	0	5,571	11,947
Stock warrants (in shares)	0	103	33	156
Total weighted average diluted shares outstanding (in shares)	153,453	147,113	153,372	146,993
Per share amounts [Abstract]
Basic EPS (in dollars per share)	$ 0.41	$ 0.27	$ 1.18	$ 0.66
Diluted EPS (in dollars per share)	$ 0.41	$ 0.27	$ 1.17	$ 0.61