Participation In The U.S. Treasury Capital Purchase Program (CPP) (Details) (USD $)		4 Months Ended	12 Months Ended
	Dec. 23, 2008	May 02, 2012 U.S. Treasury Capital Purchase Program [Member]	Dec. 31, 2012 Series A Preferred Stock [Member]	Dec. 23, 2008 Series A Preferred Stock [Member]
Participation In The U.S. Treasury Capital Repurchase Program [Line Items]
Cumulative perpetual preferred stock issued, value				$ 100,000,000
Liquidation preference per senior preferred shares	$ 1,000
Term of warrants		10 years
Stock Repurchased During Period, Shares			100,000
Stock Repurchased During Period, Value			100,000,000
Payments for Repurchase of Preferred Stock and Preference Stock			101,000,000
Dividends, Preferred Stock, Cash			972,000
Charge to retained earnings from preferred stock repurchase			1,600,000
Number of Warrants Repurchased		227,376
Payments for Repurchase of Warrants		$ 2,800,000
Repurchase Price per Share		$ 12.50