FAIR VALUE - Schedule of Estimated Fair Values of Financial Instruments (Detail) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Financial Assets
Interest-bearing deposits with banks	$ 8,073	$ 14,201
Restricted investments in bank stock	9,997	7,970
Securities available for sale	415,308	400,154
Carrying Amount
Financial Assets
Cash and due from banks	21,734	16,072
Interest-bearing deposits with banks	8,073	14,201
Restricted investments in bank stock	9,997	7,970
Securities available for sale	415,308	400,154
Loans held for sale	6,089	2,768
Loans, net of allowance for loan losses	997,216	870,616
Accrued interest receivable	5,048	4,672
Financial Liabilities
Deposits	1,219,515	1,152,452
Short-term borrowings	93,576	87,864
Long-term debt	83,815	24,163
Accrued interest payable	495	437
Off-balance sheet instruments	0	0
Fair Value
Financial Assets
Cash and due from banks	21,734	16,072
Interest-bearing deposits with banks	8,073	14,201
Securities available for sale	415,308	400,154
Loans held for sale	6,272	2,843
Loans, net of allowance for loan losses	994,617	870,470
Accrued interest receivable	5,048	4,672
Financial Liabilities
Deposits	1,213,288	1,149,727
Short-term borrowings	93,576	87,864
Long-term debt	83,949	24,966
Accrued interest payable	495	437
Off-balance sheet instruments	0	0
Fair Value \| Level 1
Financial Assets
Cash and due from banks	21,734	16,072
Interest-bearing deposits with banks	8,073	14,201
Securities available for sale	0	0
Loans held for sale	0	0
Loans, net of allowance for loan losses	0	0
Accrued interest receivable	0	0
Financial Liabilities
Deposits	0	0
Short-term borrowings	0	0
Long-term debt	0	0
Accrued interest payable	0	0
Off-balance sheet instruments	0	0
Fair Value \| Level 2
Financial Assets
Cash and due from banks	0	0
Interest-bearing deposits with banks	0	0
Securities available for sale	415,308	400,154
Loans held for sale	6,272	2,843
Loans, net of allowance for loan losses	0	0
Accrued interest receivable	2,580	2,643
Financial Liabilities
Deposits	1,213,288	1,149,727
Short-term borrowings	93,576	87,864
Long-term debt	83,949	24,966
Accrued interest payable	495	437
Off-balance sheet instruments	0	0
Fair Value \| Level 3
Financial Assets
Cash and due from banks	0	0
Interest-bearing deposits with banks	0	0
Securities available for sale	0	0
Loans held for sale	0	0
Loans, net of allowance for loan losses	994,617	870,470
Accrued interest receivable	2,468	2,029
Financial Liabilities
Deposits	0	0
Short-term borrowings	0	0
Long-term debt	0	0
Accrued interest payable	0	0
Off-balance sheet instruments	$ 0	$ 0

Interest payable fair value.

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Interest receivable fair value.

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

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-Publisher FASB
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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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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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No definition available.

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The fair value of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition.

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For banks and other depository institutions (including Federal Reserve Banks, if applicable): Interest-bearing deposits in other financial institutions for relatively short periods of time including, for example, certificates of deposits, which are presented separately from cash on the balance sheet.

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Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables.

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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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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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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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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 the amount of short-term debt existing as of the balance sheet date.

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