Fair Value of Financial Instruments Fair Value by Balance Sheet Grouping (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents	$ 111,595	$ 46,295	$ 76,050	$ 49,980
Available-for-Sale	393,133us-gaap_AvailableForSaleSecurities	366,139us-gaap_AvailableForSaleSecurities	429,230us-gaap_AvailableForSaleSecurities
Held-to-Maturity	305,175us-gaap_HeldToMaturitySecurities	302,024us-gaap_HeldToMaturitySecurities	317,632us-gaap_HeldToMaturitySecurities
Held-to-Maturity Securities, at Fair Value	312,500	308,566	322,335
Federal Home Loan Bank and Federal Reserve Bank Stock	4,806	4,851	3,896
Net Loans	1,419,169	1,397,698	1,295,787
Deposits	2,018,704us-gaap_Deposits	1,902,948us-gaap_Deposits	1,948,019us-gaap_Deposits
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase	15,895	19,421	13,787
Federal Home Loan Bank Term Advances	50,000	10,000	20,000
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts	20,000	20,000	20,000
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents	111,595	46,295	76,050
Available-for-Sale	393,133	366,139	429,230
Held-to-Maturity	305,175	302,024	317,632
Federal Home Loan Bank and Federal Reserve Bank Stock	4,806	4,851	3,896
Net Loans	1,419,169	1,397,698	1,295,787
Accrued Interest Receivable	6,698	5,834	6,808
Deposits	2,018,704	1,902,948	1,948,019
Federal Funds Purchased and Securities Sold Under Agreements to Repurchase	15,895	19,421	13,787
Federal Home Loan Bank Term Advances	50,000	51,000	20,000
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts	20,000	20,000	20,000
Accrued Interest Payable	289	274	405
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	111,595	46,295	76,050
Available-for-Sale	393,133	366,139	429,230
Held-to-Maturity Securities, at Fair Value	312,500	308,566	322,335
Federal Home Loan Bank and Federal Reserve Bank Stock, Fair Value Disclosure	4,806	4,851	3,896
Net Loans, Fair Value Disclosure	1,429,553	1,405,454	1,306,043
Accrued Interest Receivable, Fair Value Disclosure	6,698	5,834	6,808
Deposits, Fair Value Disclosure	2,016,098	1,899,682	1,944,116
Federal Funds Purchased and Securities Sold under Agreements to Repurchase, Fair Value Disclosure	15,895	19,421	13,787
Federal Home Loan Bank Term Advances, Fair Value Disclosure	50,851	51,258	20,519
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts, Fair Value Disclosure	20,000	20,000	20,000
Accrued Interest Payable, Fair Value Disclosure	289	274	405
Quoted Prices In Active Markets for Indentical Assets (Level 1) [Member] \| Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	111,595	46,295	76,050
Available-for-Sale	0	0	0
Held-to-Maturity Securities, at Fair Value	0	0	0
Federal Home Loan Bank and Federal Reserve Bank Stock, Fair Value Disclosure	4,806	4,851	3,896
Net Loans, Fair Value Disclosure	0	0	0
Accrued Interest Receivable, Fair Value Disclosure	6,698	5,834	6,808
Deposits, Fair Value Disclosure	1,820,165	1,697,105	1,709,784
Federal Funds Purchased and Securities Sold under Agreements to Repurchase, Fair Value Disclosure	15,895	19,421	13,787
Federal Home Loan Bank Term Advances, Fair Value Disclosure	0	41,000	0
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts, Fair Value Disclosure	0	0	0
Accrued Interest Payable, Fair Value Disclosure	289	274	405
Significant Other Observable Inputs (Level 2) [Member] \| Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	0	0	0
Available-for-Sale	393,133	366,139	429,230
Held-to-Maturity Securities, at Fair Value	312,500	308,566	322,335
Federal Home Loan Bank and Federal Reserve Bank Stock, Fair Value Disclosure	0	0	0
Net Loans, Fair Value Disclosure	0	0	0
Accrued Interest Receivable, Fair Value Disclosure	0	0	0
Deposits, Fair Value Disclosure	195,933	202,577	234,332
Federal Funds Purchased and Securities Sold under Agreements to Repurchase, Fair Value Disclosure	0	0	0
Federal Home Loan Bank Term Advances, Fair Value Disclosure	50,851	10,258	20,519
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts, Fair Value Disclosure	20,000	20,000	20,000
Accrued Interest Payable, Fair Value Disclosure	0	0	0
Significant Unobservable Inputs (Level 3) [Member] \| Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	0	0	0
Available-for-Sale	0	0	0
Held-to-Maturity Securities, at Fair Value	0	0	0
Federal Home Loan Bank and Federal Reserve Bank Stock, Fair Value Disclosure	0	0	0
Net Loans, Fair Value Disclosure	1,429,553	1,405,454	1,306,043
Accrued Interest Receivable, Fair Value Disclosure	0	0	0
Deposits, Fair Value Disclosure	0	0	0
Federal Funds Purchased and Securities Sold under Agreements to Repurchase, Fair Value Disclosure	0	0	0
Federal Home Loan Bank Term Advances, Fair Value Disclosure	0	0	0
Junior Subordinated Obligations Issued to Unconsolidated Subsidiary Trusts, Fair Value Disclosure	0	0	0
Accrued Interest Payable, Fair Value Disclosure	$ 0	$ 0	$ 0

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

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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The aggregate of all deposit liabilities held by the entity, including foreign and domestic, interest and noninterest bearing; may include demand deposits, saving deposits, Negotiable Order of Withdrawal (NOW) and time deposits among others.

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Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits.

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Fair value of subordinated debt obligations including, but not limited to, subordinated loan, subordinated bond, subordinated debenture or junior debt.

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Amount after offset of short term borrowing where a bank borrows, at the federal funds rate, from another bank and securities that an entity sells and agrees to repurchase at a specified date for a specified price.

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Including both current and noncurrent portions, Federal Home Loan Bank borrowings initially due beyond one year or beyond the normal operating cycle if longer.

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Fair value portion of borrowing from Federal Home Loan Bank (FHLBank).

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Amount of Federal Home Loan Bank (FHLB) and Federal Reserve Bank stock.

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Amount after other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity.

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Fair value of investments in debt securities classified as held-to-maturity.

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Amount of interest payable on debt, including, but not limited to, trade payables.

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Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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Fair value portion of investments in Federal Home Loan Bank (FHLBank) stock.

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Including the current and noncurrent portions, the carrying value of junior subordinated long-term debt owed to unconsolidated subsidiary trusts as of the balance sheet date. Such debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets and was initially scheduled to be repaid after one year or beyond the normal operating cycle if longer.

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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 and loans held for sale.

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Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts.

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Fair value portion of other assets.

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Fair value portion of other liabilities.

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