Fair Value Of Financial Instruments (Estimated Fair Values Of Financial Instruments) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale securities	$ 143,818	$ 95,222
Held to maturity securities	5,261	1,959
Mortgage servicing rights	586	527
Demand deposits	219,664	201,741
NOW deposits	109,378	88,632
Savings deposits	535,730	508,652
Time deposits	186,457	140,949
Carrying Amount [Member] \| Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	21,330	13,084
Demand deposits	219,664	201,741
NOW deposits	109,378	88,632
Savings deposits	535,730	508,652
Carrying Amount [Member] \| Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale securities	143,818	95,222
FHLB and FRB stock	6,779	3,731
Securities sold under agreement to repurchase	9,289	10,159
Other borrowed funds	88,250	28,200
Junior subordinated debentures	11,330	11,330
Carrying Amount [Member] \| Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Held to maturity securities	5,334	1,983
Loans, net	1,051,296	928,596
Mortgage servicing rights	586	527
Time deposits	186,457	140,949
Fair Value [Member] \| Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	21,330	13,084
Demand deposits	219,664	201,741
NOW deposits	109,378	88,632
Savings deposits	535,730	508,652
Fair Value [Member] \| Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Available for sale securities	143,818	95,222
FHLB and FRB stock	6,779	3,731
Securities sold under agreement to repurchase	9,289	10,159
Other borrowed funds	88,132	28,152
Junior subordinated debentures	11,330	11,330
Fair Value [Member] \| Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Held to maturity securities	5,261	1,959
Loans, net	1,047,967	945,998
Mortgage servicing rights	586	527
Time deposits	$ 187,782	$ 141,758

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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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 amount of money in accounts that may bear interest and that the depositor is entitled to withdraw at any time without prior notice.

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Amount of deposits in interest-bearing transaction accounts at banks or savings and loans, that are restricted in regard to ownership and can usually only be held by individuals, nonprofit entities and governments. Negotiable order of withdrawal accounts differ from money market demand accounts as they typically have higher reserve requirements and no limit on the number of checks that can be written.

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Amount of interest bearing deposits with no stated maturity, which may include passbook and statement savings accounts and money-market deposit accounts (MMDAs).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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

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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 securities that an entity sells and agrees to repurchase at a specified date for a specified price.

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Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

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Amount of time deposit liabilities, including certificates of deposit.

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