Securities (Details) (USD $)	3 Months Ended			12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Year-end securities available for sale [Abstract]
Fair value	$ 87,140,000			$ 79,150,000	$ 87,140,000
Gross unrealized gain	1,802,000			3,212,000	1,802,000
Gross unrealized losses	(10,000)			(8,000)	(10,000)
Sales of securities available for sale [Abstract]
Proceeds				0	20,102,000	105,697,000
Gross gains				0	527,000	2,390,000
Gross losses				0	0	0
Contractual maturities of debt securities available for sale [Abstract]
Due in one year or less				124,000
Due after one year through five years				545,000
Due after five years through ten years				1,400,000
Due after ten years				523,000
Total with single maturity date				2,592,000
Mortgage-backed securities				72,266,000
Equity securities				4,292,000
Total				79,150,000
Pledged securities	57,041,000			53,613,000	57,041,000
Concentration Risk [Line Items]
Threshold percentage of concentration risk (in hundredths)				10.00%
Number of securities in unrealized loss positions	7			6	7
Fair Value [Abstract]
Less than 12 months	941,000			0	941,000
12 months or more	0			817,000	0
Total	941,000			817,000	941,000
Unrealized Losses [Abstract]
Less than 12 months	(10,000)			0	(10,000)
12 months or more	0			(8,000)	0
Total	(10,000)			(8,000)	(10,000)
Gain on sale of securities	250,000	135,000	142,000	0	527,000	2,390,000
Lender Concentration Risk [Member] | Consolidated Stockholders' Equity [Member]
Concentration Risk [Line Items]
Concentration risk (in hundredths)				27.00%
States and political subdivisions [Member]
Year-end securities available for sale [Abstract]
Fair value	3,117,000			2,592,000	3,117,000
Gross unrealized gain	112,000			135,000	112,000
Gross unrealized losses	(10,000)			(8,000)	(10,000)
Fair Value [Abstract]
Less than 12 months	941,000			0	941,000
12 months or more	0			817,000	0
Total	941,000			817,000	941,000
Unrealized Losses [Abstract]
Less than 12 months	(10,000)			0	(10,000)
12 months or more	0			(8,000)	0
Total	(10,000)			(8,000)	(10,000)
Mortgage-backed securities [Member]
Year-end securities available for sale [Abstract]
Fair value	79,762,000			72,266,000	79,762,000
Gross unrealized gain	1,533,000			2,889,000	1,533,000
Gross unrealized losses	0			0	0
Equity securities [Member]
Year-end securities available for sale [Abstract]
Fair value	4,261,000			4,292,000	4,261,000
Gross unrealized gain	157,000			188,000	157,000
Gross unrealized losses	0			0	0
Collateralized Debt Obligations [Member]
Unrealized Losses [Abstract]
Other than temporary impairment of securities					134,000	645,000
Gain on sale of securities					250,000
FNMA and FHLMC Preferred Stocks [Member]
Unrealized Losses [Abstract]
Other than temporary impairment of securities					29,000	14,000
Gain on sale of securities					$ 142,000