Consolidated Statement of Changes in Stockholders' Equity (Parentheticals) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Common cash dividends per share (in Dollars per share)	$ 0.08	$ 0.08	$ 0.08
Shares of common stock issued as a result of stock purchased under the Employee Stock Purchase Plan	36,174		28,575
Shares of common stock exchanged in connection with payroll taxes for restricted stock			830
Shares of Series B Non-Cumulative Perpetual Preferred Stock exchanged for shares of Series E Non-Cumulative Perpetual Convertible Preferred Stock		(268)
Shares of Series C Non-Cumulative Perpetual Preferred Stock exchanged for Series E Non-Cumulative Perpetual Convertible Preferred Stock		(300)
Shares of common stock issued as a result of stock options exercised	36,459
Shares of Series D CumulativePerpetual Preferred Stock Redeemed	38,237
Shares of common stock warrants issued in conjunction with Series D Cumulative Perpetual Preferred Stock Redeemed	521,888
Shares of common stock exchanged in connection with stock options exercised	2,550
Series E Preferred Stock [Member]
Exchange of shares of Series B Non-Cumulative Perpetual Preferred Stock for shares of Series E Non-Cumulative Perpetual Convertible Preferred Stock		13,400
Exchange of shares of Series C Non-Cumulative Perpetual Preferred Stock for shares of Series E Non-Cumulative Perpetual Convertible Preferred Stock		13,400
Series E Preferred Stock [Member]
Exchange of shares of Series B Non-Cumulative Perpetual Preferred Stock for shares of Series E Non-Cumulative Perpetual Convertible Preferred Stock		7,500
Exchange of shares of Series C Non-Cumulative Perpetual Preferred Stock for shares of Series E Non-Cumulative Perpetual Convertible Preferred Stock		7,500
Preferred Stock [Member]
Shares of preferred stock and common stock warrant issued			38,237
Shares of Series F Non-Cumulative Perpetual Preferred Stock Issued			38,237
Series E Preferred Stock [Member]
Shares of common stock issued as a result of stock purchased under the Employee Stock Purchase Plan		28,907
Shares of common stock exchanged in connection with payroll taxes for restricted stock		(367)
Shares of Series E Non-Cumulative Perpetual Convertible Preferred Stock issued		4,100
Shares of common stock issued in conjunction with the issuance of Series A Subordinated Notes		54,000
Shares of common stock issued as a result of stock options exercised		5,754
Series F Preferred Stock [Member]
Shares of preferred stock and common stock warrant issued	40,090
Shares of Series F Non-Cumulative Perpetual Preferred Stock Issued	40,090