Fair Value Instruments Measured at Fair Value (Details 1) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2012 Carrying Value [Member]	Jun. 30, 2011 Carrying Value [Member]	Jun. 30, 2012 Fair Value [Member]	Jun. 30, 2011 Fair Value [Member]
Financial Assets
Cash and cash equivalents			$ 219,635	$ 166,891	$ 219,635	$ 166,891
Securities	579,813	668,339	579,813	636,390	580,490	636,610
Loans, net	1,196,719	1,182,509	1,196,719	1,157,714	1,226,509	1,161,725
Loans held for sale			11,186	4,758	11,186	4,758
Financial Liabilities
Deposit liabilities			1,689,584	1,681,461	1,691,984	1,687,501
Borrowings			189,489	152,827	195,123	156,852
Subordinated debt			$ 53,610	$ 53,610	$ 32,166	$ 17,200

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 includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Company may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months.

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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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