Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Held-to-maturity, fair value	$ 111,054	$ 101,751
Allowance for loan losses	$ 103,744	$ 124,568
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	10,000,000	10,000,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	45,000,000	45,000,000
Common stock, shares issued	29,718,074	19,235,706
Common stock, shares outstanding	28,360,076	17,877,708
Treasury stock, shares	1,357,998	1,357,998
Preferred Stock, Series B
Preferred stock, shares authorized	104,823	104,823
Preferred stock, shares issued	104,823	104,823
Preferred stock, shares outstanding	104,823	104,823
Preferred stock, liquidation value	$ 1,000	$ 1,000
Preferred Stock, Series C
Preferred stock, shares authorized	1,500,000	1,500,000
Preferred stock, shares issued	0	1,276,480
Preferred stock, shares outstanding	0	1,276,480
Preferred stock, liquidation value	$ 25	$ 25
Preferred Stock, Series D
Preferred stock, shares authorized	860,378	860,378
Preferred stock, shares issued	405,330	405,330
Preferred stock, shares outstanding	405,330	405,330
Preferred Stock, Series E
Preferred stock, shares authorized	223,520	223,520
Preferred stock, shares issued	0	223,520
Preferred stock, shares outstanding	0	223,520
Preferred stock, liquidation value	$ 25	$ 25
Preferred Stock, Series G
Preferred stock, shares authorized	1,350,000	1,350,000
Preferred stock, shares issued	877,344	0
Preferred stock, shares outstanding	877,344	0