Fair Value Measurements - Schedule of Carrying Amount, Fair Value and Placement in Fair Value Hierarchy (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Financial assets:
Interest-bearing deposits in banks	$ 43,285	$ 20,800	$ 43,730
Equity securities with readily determinable fair values	1,872	1,839	1,760	$ 1,793
Debt securities available for sale	160,949	161,730	155,620
Investment securities held to maturity	25,871	26,911	40,758
Restricted investment in bank stocks	4,382	4,336	$ 4,802
Level 1
Financial assets:
Cash and due from banks	7,447	8,190
Interest-bearing deposits in banks	43,285	20,800
Equity securities with readily determinable fair values	1,872	1,839
Debt securities available for sale	0	0
Investment securities held to maturity	0	0
Loans held for sale	0	0
Loans, less allowance for loan losses	0	0
Accrued interest receivable	0	0
Restricted investment in bank stocks	0	0
Financial liabilities:
Demand deposits and savings	0	0
Time deposits	0	0
Short-term borrowings	0	0
Long-term borrowings	0	0
Trust preferred subordinated debt	0	0
Accrued interest payable	0	0
Off-balance sheet financial instruments	0	0
Level 2
Financial assets:
Cash and due from banks	10,621	11,915
Interest-bearing deposits in banks	0	0
Equity securities with readily determinable fair values	0	0
Debt securities available for sale	160,949	161,730
Investment securities held to maturity	25,871	26,911
Loans held for sale	300	408
Loans, less allowance for loan losses	0	0
Accrued interest receivable	5,047	4,545
Restricted investment in bank stocks	4,382	4,336
Financial liabilities:
Demand deposits and savings	982,005	979,964
Time deposits	383,028	364,093
Short-term borrowings	29,759	34,648
Long-term borrowings	77,599	78,545
Trust preferred subordinated debt	4,704	4,701
Accrued interest payable	1,614	1,364
Off-balance sheet financial instruments	0	0
Level 3
Financial assets:
Cash and due from banks	0	0
Interest-bearing deposits in banks	0	0
Equity securities with readily determinable fair values	0	0
Debt securities available for sale	0	0
Investment securities held to maturity	0	0
Loans held for sale	0	0
Loans, less allowance for loan losses	1,271,701	1,272,393
Accrued interest receivable	0	0
Restricted investment in bank stocks	0	0
Financial liabilities:
Demand deposits and savings	0	0
Time deposits	0	0
Short-term borrowings	0	0
Long-term borrowings	0	0
Trust preferred subordinated debt	0	0
Accrued interest payable	0	0
Off-balance sheet financial instruments	0	0
Carrying Amount
Financial assets:
Cash and due from banks	18,068	20,105
Interest-bearing deposits in banks	43,285	20,800
Equity securities with readily determinable fair values	1,872	1,839
Debt securities available for sale	160,949	161,730
Investment securities held to maturity	26,073	27,266
Loans held for sale	300	408
Loans, less allowance for loan losses	1,287,315	1,288,501
Accrued interest receivable	5,047	4,545
Restricted investment in bank stocks	4,382	4,336
Financial liabilities:
Demand deposits and savings	982,005	979,964
Time deposits	385,053	368,128
Short-term borrowings	29,759	34,648
Long-term borrowings	77,407	78,516
Trust preferred subordinated debt	5,000	5,000
Accrued interest payable	1,614	1,364
Off-balance sheet financial instruments	0	0
Fair Value
Financial assets:
Cash and due from banks	18,068	20,105
Interest-bearing deposits in banks	43,285	20,800
Equity securities with readily determinable fair values	1,872	1,839
Debt securities available for sale	160,949	161,730
Investment securities held to maturity	25,871	26,911
Loans held for sale	300	408
Loans, less allowance for loan losses	1,271,701	1,272,393
Accrued interest receivable	5,047	4,545
Restricted investment in bank stocks	4,382	4,336
Financial liabilities:
Demand deposits and savings	982,005	979,964
Time deposits	383,028	364,093
Short-term borrowings	29,759	34,648
Long-term borrowings	77,599	78,545
Trust preferred subordinated debt	4,704	4,701
Accrued interest payable	1,614	1,364
Off-balance sheet financial instruments	$ 0	$ 0

Demand Deposits and Savings, Fair Value Disclosure

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Equity interest in bank stocks. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity).

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Time Deposits, Fair Value Disclosure

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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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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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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The face amount 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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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 of investment in debt security measured at amortized cost (held-to-maturity).

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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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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 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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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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