Fair Value Measurements - Fair Value by Balance Sheet Grouping (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Carrying Value
Financial assets:
Cash and due from banks	$ 18,643	$ 19,409
Interest-earning deposits in other banks	28,231	24,467
Federal funds sold	610	928
Available-for-sale investment securities	322,931	328,413
Loans, net	404,203	415,999
Federal Home Loan Bank stock	3,850	2,893
Accrued interest receivable	3,865	3,953
Financial liabilities:
Deposits	702,751	712,986
Debt	4,000	4,000
Junior subordinated deferrable interest debentures	5,155	5,155
Accrued interest payable	205	230
Level 1
Financial assets:
Cash and due from banks	18,643
Interest-earning deposits in other banks	28,231
Federal funds sold	610
Available-for-sale investment securities	7,976
Loans, net	0
Accrued interest receivable	19
Financial liabilities:
Deposits	0
Debt	0
Junior subordinated deferrable interest debentures	0
Accrued interest payable	0
Level 2
Financial assets:
Cash and due from banks	0
Interest-earning deposits in other banks	0
Federal funds sold	0
Available-for-sale investment securities	314,955
Loans, net	0
Accrued interest receivable	2,005
Financial liabilities:
Deposits	703,256
Debt	4,082
Junior subordinated deferrable interest debentures	0
Accrued interest payable	178
Level 3
Financial assets:
Cash and due from banks	0
Interest-earning deposits in other banks	0
Federal funds sold	0
Available-for-sale investment securities	0
Loans, net	404,978
Accrued interest receivable	1,841
Financial liabilities:
Deposits	0
Debt	0
Junior subordinated deferrable interest debentures	3,190
Accrued interest payable	27
Fair Value
Financial assets:
Cash and due from banks	18,643	19,409
Interest-earning deposits in other banks	28,231	24,467
Federal funds sold	610	928
Available-for-sale investment securities	322,931	328,413
Loans, net	404,978	418,084
Accrued interest receivable	3,865	3,953
Financial liabilities:
Deposits	703,256	719,673
Debt	4,082	4,146
Junior subordinated deferrable interest debentures	3,190	2,706
Accrued interest payable	$ 205	$ 230

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This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

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Amount of subordinated debt obligations (also known as subordinated loan, subordinated bond, subordinated debenture or junior debt) which has a priority ranking after other debts in a dissolution, measured at fair value.

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