Net Income Per Common Share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net Income	$ (4,627)	$ 19,167	$ 46,510	$ 54,489
Preferred Stock Dividends	(2,294)	(814)	(5,608)	(814)
Net income to common shareholders	(6,921)	18,353	40,902	53,675
Effect of dilutive stock options, income		0	0	0
Diluted net income	$ (6,921)	$ 18,353	$ 40,902	$ 53,675
Weighted Average Common Shares	54,903,637	54,367,349	54,727,950	52,751,763
Effect of dilutive stock options, number of shares	0	866	0	0
Diluted, Weighted Average Number Common Shares	54,903,637	54,368,215	54,727,950	52,751,763
Basic Net Income Per Common Share	$ (0.13)	$ 0.34	$ 0.75	$ 1.02
Diluted Net Income Per Common Share	$ (0.13)	$ 0.34	$ 0.75	$ 1.02
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		15,000