Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Assets
Cash and cash equivalents	$ 19,134	$ 19,207
Interest-bearing deposits in other banks	12,079	860
Securities available for sale	317,416
Securities available for sale		297,199
Securities to be held to maturity (fair value of $250,900,000 at December 31, 2018, and $259,655,000 at December 31, 2017)	255,663	256,567
Restricted equity securities, at cost	11,586	10,358
Loans held for sale	0	386
Loans	1,238,283	1,164,139
Less allowance for loan losses	11,232	10,729
Net loans	1,227,051	1,153,410
Accrued interest receivable	6,660	5,867
Premises and equipment, net	22,056	22,502
Other real estate owned	584	1,012
Goodwill	29,805	29,805
Other assets	42,536	45,757
Total assets	1,944,570	1,842,930
Liabilities
Demand deposits	163,575	145,332
NOW deposits	382,923	318,043
Money market deposits	152,043	163,898
Savings deposits	237,135	232,605
Certificates of deposit	591,409	559,001
Total deposits	1,527,085	1,418,879
Borrowed funds – short term	145,205	113,638
Borrowed funds – long term	65,112	115,120
Other liabilities	15,626	13,972
Total liabilities	1,753,028	1,661,609
Commitments and contingent liabilities
Shareholders' equity
Common stock, one cent par value per share	109	108
Additional paid-in capital	62,746	61,747
Retained earnings	132,460	121,144
Accumulated other comprehensive income (loss)
Net unrealized loss on securities available for sale	(5,051)	(2,901)
Net unrealized loss on securities transferred from available for sale to held to maturity	(197)	(174)
Net unrealized gain on cash flow hedging derivative instruments	1,438	1,544
Net unrecognized gain (loss) on postretirement benefit costs	37	(147)
Total shareholders' equity	191,542	181,321
Total liabilities and shareholders' equity	$ 1,944,570	$ 1,842,930
Common stock
Number of shares authorized (in shares)	18,000,000	18,000,000
Number of shares issued (in shares)	10,862,651	10,829,918
Number of shares outstanding (in shares)	10,862,651	10,829,918
Book value per common share (usd per share)	$ 17.63	$ 16.74
Tangible book value per common share (usd per share)	$ 14.87	$ 13.97

Book value of common stock per share.

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Other Comprehensive Income (Loss), Accumulated Unrealized Gain (Loss) on Transfer of Available-for-sale Securities to Held-to-maturity

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Amount of stock held at Federal Home Loan Bank and Federal Reserve Bank. Federal Home Loan Bank (FHLB) stock and Federal Reserve Bank Stock represents an equity interest in a FHLB of FRB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).

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Tangible book value of common stock per share.

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Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

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Amount, after tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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Excess of issue price over par or stated value of the entity's capital stock and amounts received from other transactions involving the entity's stock or stockholders. Includes adjustments to additional paid in capital. Some examples of such adjustments include recording the issuance of debt with a beneficial conversion feature and certain tax consequences of equity instruments awarded to employees. Use this element for the aggregate amount of additional paid-in capital associated with common and preferred stock. For additional paid-in capital associated with only common stock, use the element additional paid in capital, common stock. For additional paid-in capital associated with only preferred stock, use the element additional paid in capital, preferred stock.

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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

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For banks and other depository institutions: Includes cash on hand (currency and coin), cash items in process of collection, noninterest bearing deposits due from other financial institutions (including corporate credit unions), and noninterest bearing balances with the Federal Reserve Banks, Federal Home Loan Banks and central banks.

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Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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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 accounts that offer many of the same services as checking accounts although transactions may be somewhat more limited, share some of the characteristics of a money market fund and are insured by the Federal government, also known as money market accounts.

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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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The amount outstanding of funds lent to other depository institutions, securities brokers, or securities dealers in the form of Federal Funds sold; for example, immediately available funds lent under agreements or contracts that mature in one business day or roll over under a continuing contract, regardless of the nature of the transaction or the collateral involved, excluding overnight lending for commercial and industrial purposes. Also include Federal Funds sold under agreements to resell on a gross basis, excluding (1) sales of term Federal Funds, (2) due bills representing purchases of securities or other assets by the reporting bank that have not yet been delivered and similar instruments, (3) resale agreements that mature in more than one business day involving assets other than securities, and (4) yield maintenance dollar repurchase agreements.

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