Fair Value of Assets and Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Assets
Securities available for sale	$ 391,782	$ 383,782
Fair Value, Measurements, Recurring [Member]
Assets
Securities available for sale	391,782	383,782
Bank owned life insurance	9,293	9,135
Liabilities
Interest rate swap	1,237	1,297
Quoted Prices In Active Markets for Identical Assets (Level 1) [Member] \| Fair Value, Measurements, Recurring [Member]
Assets
Securities available for sale
Bank owned life insurance
Liabilities
Interest rate swap
Using Significant Other Observable Inputs (Level 2) [Member]
Assets
Bank owned life insurance	9,293
Using Significant Other Observable Inputs (Level 2) [Member] \| Fair Value, Measurements, Recurring [Member]
Assets
Securities available for sale	390,360	382,789
Bank owned life insurance		9,135
Liabilities
Interest rate swap	1,237	1,297
Significant Unobservable Inputs (Level 3) [Member] \| Fair Value, Measurements, Recurring [Member]
Assets
Securities available for sale	$ 1,422	$ 993

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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+ Details

- Definition

Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity.

+ References+ Details

- Definition

Fair values as of the balance sheet date of all liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments, net of the effects of master netting arrangements.

+ References+ Details