Preferred Stock and Common Stock Warrant (Details) (USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended		3 Months Ended	9 Months Ended
	Sep. 30, 2010	Feb. 27, 2009	Sep. 30, 2012	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011	Sep. 29, 2010
Class of Stock [Line Items]
Preferred stock, shares issued			30,000	30,000		30,000
Proceeds received in exchange		$ 30,000
Adjustments to additional paid-in capital, common stock warrant		1,363
Shares Authorized			2,000,000	2,000,000		2,000,000
Shares Outstanding			30,000	30,000		30,000
Carrying Value			18,528	18,528		17,564
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
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
Fair value of stock on exchange date	29,026
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				964	870
Period for initial dividend rate				8 years
Gain recorded on exchange of stock	12,867
Dividend Rate		9.00%		2.00%
Shares Outstanding			30,000	30,000		30,000
Carrying Value			$ 18,528	$ 18,528		$ 17,564	$ 16,159
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%