Fair Value Measurements (Details 4) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2011	Dec. 31, 2010
Financial assets
Cash and due from banks	$ 2,852	$ 2,026	$ 2,724	$ 7,854
Interest bearing balances with banks	28,884	18,288
Federal funds sold	8	26,583
Federal reserve and federal home loan bank stock	2,865	2,992
Accrued interest receivable	1,320	1,279
Bank owned life insurance	5,734	5,624
Real estate owned	1,169	1,222
Financial liabilities
Noninterest bearing deposits	56,414	56,664
Interest bearing deposits	286,801	293,717
Securities sold under agreements to repurchase	16,458	11,344
Long-term borrowings	35,000	35,000
Junior subordinated debt	5,000	5,000
Accrued interest and dividends payable	187	219
Carrying Amount [Member] | Level 2 [Member]
Financial assets
Cash and due from banks	2,852	2,026
Interest bearing balances with banks	28,884	18,288
Federal funds sold	8	26,583
Investment securities	89,377	85,694
Federal reserve and federal home loan bank stock	2,865	2,992
Loans and loans held for sale, net	290,476	283,284
Accrued interest receivable	1,320	1,279
Bank owned life insurance	5,734	5,624
Real estate owned	1,169	1,222
Financial liabilities
Noninterest bearing deposits	56,414	56,664
Interest bearing deposits	286,801	293,717
Securities sold under agreements to repurchase	16,458	11,344
Long-term borrowings	35,000	35,000
Junior subordinated debt	5,000	5,000
Accrued interest and dividends payable	187	167
Carrying Amount [Member] | Level 3 [Member]
Financial assets
Other debt securities	1,588		1,855
Estimated Fair Value [Member] | Level 2 [Member]
Financial assets
Cash and due from banks	2,852	2,026
Interest bearing balances with banks	28,884	18,288
Federal funds sold	8	26,583
Investment securities	89,377	85,694
Federal reserve and federal home loan bank stock	2,865	2,992
Loans and loans held for sale, net	290,777	283,667
Accrued interest receivable	1,320	1,279
Bank owned life insurance	5,734	5,624
Real estate owned	1,169	1,222
Financial liabilities
Noninterest bearing deposits	56,414	56,664
Interest bearing deposits	288,033	298,788
Securities sold under agreements to repurchase	16,458	11,344
Long-term borrowings	31,265	31,357
Junior subordinated debt	5,000	5,000
Accrued interest and dividends payable	187	167
Estimated Fair Value [Member] | Level 3 [Member]
Financial assets
Other debt securities	$ 1,588		$ 1,855