Fair Value Measurements And Fair Value Of Financial Instruments (Estimated Fair Values And Related Carrying Amounts Of Financial Instruments) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	$ 35,311	$ 28,077
Securities available for sale	399,679	384,957
Securities held to maturity	53,458	40,217
Bank stocks	17,147	15,605
Loans held for sale		558
Loans held for investment, net	1,334,280	1,291,439
Accrued interest receivable	6,032	5,156
Interest rate swap - cash flow hedge	183	465
Deposits	1,531,625	1,527,034
Federal funds purchased and securities sold under agreements to repurchase	27,045	24,284
Short-term borrowings	63,017	20,000
Subordinated debentures	18,345	18,351
Long-term borrowings	116,778	117,316
Accrued interest payable	606	600
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	35,311	28,077
Loans held for sale		558
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities available for sale	375,033	360,790
Securities held to maturity	49,268	36,463
Accrued interest receivable	6,032	5,156
Interest rate swap - cash flow hedge	183	465
Deposits	1,531,625	1,527,034
Federal funds purchased and securities sold under agreements to repurchase	27,045	24,284
Short-term borrowings	63,017	20,000
Long-term borrowings	116,778	117,316
Accrued interest payable	606	600
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities available for sale	24,646	24,167
Securities held to maturity	4,190	3,754
Loans held for investment, net	1,334,280	1,291,439
Subordinated debentures	18,345	18,351
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	35,311	28,077
Securities available for sale	399,679	384,957
Securities held to maturity	54,021	41,738
Bank stocks	17,147	15,605
Loans held for sale		507
Loans held for investment, net	1,340,762	1,298,912
Accrued interest receivable	6,032	5,156
Interest rate swap - cash flow hedge	183	465
Deposits	1,533,010	1,528,457
Federal funds purchased and securities sold under agreements to repurchase	27,045	24,284
Short-term borrowings	63,017	20,000
Subordinated debentures	25,774	25,774
Long-term borrowings	110,000	110,000
Accrued interest payable	$ 606	$ 600

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

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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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Federal Home Loan Bank borrowings due within one year of the latest balance sheet date.

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Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid.

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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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The fair value amount of long-term debt 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.

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An amount representing an agreement for an unconditional promise by the maker to pay the Entity (holder) a definite sum of money at a future date more than one year from the balance sheet date, net of any write-downs taken for collection uncertainty on the part of the holder. Such amount may include accrued interest receivable in accordance with the terms of the debt. The debt also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. This amount does not include amounts related to receivables held-for-sale.

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Investments which are not defined as or included in marketable (debt, equity, or other) securities whose use is restricted in whole or in part, generally by contractual agreements or regulatory requirements. For use in an unclassified balance sheet.

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