Stockholders' Equity (Details) (USD $)	0 Months Ended		3 Months Ended	12 Months Ended
	Sep. 30, 2010	Feb. 27, 2009	Dec. 31, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Sep. 29, 2010
Class of Stock [Line Items]
Preferred stock, shares issued			30,000	30,000	30,000
Proceeds received in exchange		$ 30,000,000
Adjustments to additional paid-in capital, common stock warrant		1,363,000
Gain on exchange of preferred stock						0
Shares Authorized			2,000,000	2,000,000	2,000,000
Shares Outstanding			30,000	30,000	30,000
Carrying Value			18,865,000	18,865,000	17,564,000
Common stock, shares authorized			50,000,000	50,000,000	50,000,000
Dividend Reinvestment and Stock Purchase Plan
Class of Stock [Line Items]
Common stock, shares authorized			200,000	200,000
Common Stock
Class of Stock [Line Items]
Number of shares to be purchased by warrants		513,113
Exercise price of warrants		8.77
Preferred Class A
Class of Stock [Line Items]
Dividend Rate				0.00%
Shares Authorized			1,000,000	1,000,000	1,000,000
Shares Outstanding			0	0	0
Carrying Value			0	0	0
Preferred Class B
Class of Stock [Line Items]
Shares Authorized			1,000,000	1,000,000	1,000,000
Carrying Value		28,637,000
Preferred Class B | Series A Preferred Stock
Class of Stock [Line Items]
Preferred stock, shares issued		30,000
Warrant term		10 years
Liquidation preference		$ 1,000
Accretion period of redemption discount			5 years
Accretion of redemption discount						188,000
Fair value of stock on exchange date	29,026,000
Dividend Rate		5.00%		5.00%
Shares Outstanding			0	0	0
Carrying Value			0	0	0
Preferred Class B | Series CD Preferred Stock
Class of Stock [Line Items]
Preferred stock, shares issued		30,000					30,000
Liquidation preference		$ 1,000
Expected dividend rate				9.00%
Discount rate				10.00%
Accretion period of redemption discount			8 years
Accretion of redemption discount				1,301,000	1,174,000	231,000
Period for initial dividend rate				8 years
Gain on exchange of preferred stock	12,867,000
Dividend Rate		9.00%		2.00%
Shares Outstanding			30,000	30,000	30,000
Carrying Value			18,865,000	18,865,000	17,564,000		16,159,000
Preferred Class B | Series CD Preferred Stock | Banking Subsidiary Uncertified for 180 Days
Class of Stock [Line Items]
Number of days uncertified, first period				180 days
Dividend Rate				5.00%
Preferred Class B | Series CD Preferred Stock | Banking Subsidiary Uncertified for 270 Days
Class of Stock [Line Items]
Number of days uncertified, second period				90 days
Dividend Rate				9.00%
Minimum
Class of Stock [Line Items]
Dividend Reinvestment and Stock Purchase Plan, Shareholder Optional Cash Payments				50.00
Maximum
Class of Stock [Line Items]
Dividend Reinvestment and Stock Purchase Plan, Shareholder Optional Cash Payments				$ 5,000.00