Earnings (Loss) Per Common Share (Details Textual) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012 Series F Preferred Stock [Member] Maximum [Member]	Sep. 30, 2012 Series F Preferred Stock [Member] Maximum [Member] Scenario, Previously Reported [Member]	Sep. 30, 2012 Series F Preferred Stock [Member] Minimum [Member]	Sep. 30, 2012 Series F Preferred Stock [Member] Minimum [Member] Scenario, Previously Reported [Member]	Sep. 30, 2012 Capital Purchase Program [Member]	Jun. 30, 2012 Capital Purchase Program [Member]	Mar. 31, 2012 Capital Purchase Program [Member]	Dec. 31, 2011 Capital Purchase Program [Member]
Class of Warrant or Right [Line Items]
Exercise price of warrant									9.622	9.649	9.676	9.699
Conversion rate of common stock to preferred stock					36.4596	36.036	29.8831	29.536
Earnings Loss Per Share (Textual) [Abstract]
Dividends declared	$ 0.10	$ 0.10	$ 0.3	$ 0.3