Debt (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012 fhlb_advances	Dec. 31, 2011	Nov. 21, 2011	Jun. 28, 2012 Series C Convertible Preferred Stock [Member]	Dec. 31, 2011 Series C Convertible Preferred Stock [Member]	May 13, 2011 Series C Convertible Preferred Stock [Member]	Mar. 02, 2011 Series C Convertible Preferred Stock [Member]	Feb. 11, 2011 Series C Convertible Preferred Stock [Member]
Debt Disclosure [Abstract]
Securities Sold Under Agreements to Repurchase Weighted Average Rate	0.07%
Minimum amount pledeged per agreements	133.00%
Balance of FHLB Letters of Credit held	$ 0
Number of Federal Home Loan Bank, Advances, Maturities	1
Long-term Federal Home Loan Bank Advances	5,000	19,750
Federal Home Loan Bank Advances Interest Rate	4.58%
Federal Home Loan Bank Advances, Original Maturity Term	10-year
Class of Stock [Line Items]
Preferred Stock, shares subscribed, value								27,500
Promissory notes aggregate principal amount			8,250
Preferred Stock issued during period, value	52,035	43,785		8,250	19,250	5,490	2,750	11,010
Maturities of Long-term Debt [Abstract]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	0
Long-term Debt, Maturities, Repayments of Principal in Year Two	0
Long-term Debt, Maturities, Repayments of Principal in Year Three	0
Long-term Debt, Maturities, Repayments of Principal in Year Four	5,000
Long-term Debt, Maturities, Repayments of Principal in Year Five	0
Long-term Debt, Maturities, Repayments of Principal after Year Five	20,625
Long-term Debt	$ 25,625