Borrowings (Details) (USD $)	Jun. 30, 2012	Dec. 31, 2011
Debt Instrument [Line Items]
Long-term debt	$ 20,391,000	$ 21,373,000
Short-term Debt [Line Items]
Amount	13,142,000	21,596,000
Rate (in hundredths)	0.10%	0.07%
FHLB Short-Term Advance [Member]
Short-term Debt [Line Items]
Amount	0	12,000,000
Rate (in hundredths)	0.00%	0.04%
Repurchase Agreements [Member]
Short-term Debt [Line Items]
Amount	13,142,000	9,596,000
Rate (in hundredths)	0.10%	0.10%
1-4 Family First Lien Mortgage Loans [Member]
Debt Instrument [Line Items]
Pledged Financial Instruments securities for Federal Home Loan Bank	145,000,000	147,000,000
Federal Home Loan Bank Advance Due August 2012 [Member] | Fixed Rate Advances Due at Maturity [Member]
Debt Instrument [Line Items]
Long-term debt	6,000,000	6,000,000
Interest rate, period end (in hundredths)	1.99%
Federal Home Loan Bank Fixed Rate Advance Due January 2015 [Member] | Fixed Rate Advances Due at Maturity [Member]
Debt Instrument [Line Items]
Long-term debt	5,000,000	5,000,000
Interest rate, period end (in hundredths)	2.00%
Federal Home Loan Bank Advance Due 2017 [Member] | Fixed Rate Advances Due at Maturity [Member]
Debt Instrument [Line Items]
Long-term debt	5,000,000	5,000,000
Interest rate, period end (in hundredths)	5.25%
Federal Home Loan Bank Advance Due 2014 [Member] | Fixed Rate Advances with Monthly Principal and Interest Payments [Member]
Debt Instrument [Line Items]
Long-term debt	1,820,000	2,326,000
Interest rate, period end (in hundredths)	2.45%
Federal Home Loan Bank Advance Due 2019 [Member] | Fixed Rate Advances with Monthly Principal and Interest Payments [Member]
Debt Instrument [Line Items]
Long-term debt	$ 2,571,000	$ 3,047,000
Interest rate, period end (in hundredths)	2.82%