Participation In The U.S. Treasury Capital Purchase Program (CPP) (Details) (USD $)	9 Months Ended		4 Months Ended	12 Months Ended
	Sep. 30, 2012	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)			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