Fair Value Measurements - Schedule of Carrying Amount, Fair Value and Placement in Fair Value Hierarchy (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017
Financial assets:
Interest-bearing deposits in banks	$ 44,650	$ 15,137	$ 8,896
Equity securities with readily determinable fair values	1,767	0	0
Debt securities available for sale	152,424	159,051	133,719
Investment securities held to maturity	39,145	44,549	50,000
Restricted investment in bank stocks	4,849	4,773	$ 4,899
Level 1
Financial assets:
Cash and due from banks	8,020	8,313
Interest-bearing deposits in banks	44,650	15,137
Equity securities with readily determinable fair values	1,767
Debt securities available for sale	0	1,784
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:
Deposits		0
Demand deposits and savings	0
Time deposits	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	10,383	10,991
Interest-bearing deposits in banks	0	0
Equity securities with readily determinable fair values	0
Debt securities available for sale	152,424	157,267
Investment securities held to maturity	39,145	44,549
Loans held for sale	1,265	1,736
Loans, less allowance for loan losses	0	0
Accrued interest receivable	4,368	3,670
Restricted investment in bank stocks	4,849	4,773
Financial liabilities:
Deposits		1,295,456
Demand deposits and savings	981,505
Time deposits	347,307
Short-term borrowings	26,418	36,908
Long-term borrowings	84,567	89,571
Trust preferred subordinated debt	4,694	4,692
Accrued interest payable	1,447	1,163
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
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	1,199,718	1,213,932
Accrued interest receivable	0	0
Restricted investment in bank stocks	0	0
Financial liabilities:
Deposits		0
Demand deposits and savings	0
Time deposits	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	18,403	19,304
Interest-bearing deposits in banks	44,650	15,137
Equity securities with readily determinable fair values	1,767
Debt securities available for sale	152,424	159,051
Investment securities held to maturity	39,894	44,829
Loans held for sale	1,265	1,736
Loans, less allowance for loan losses	1,233,655	1,230,194
Accrued interest receivable	4,368	3,670
Restricted investment in bank stocks	4,849	4,773
Financial liabilities:
Deposits		1,298,492
Demand deposits and savings	981,505
Time deposits	352,470
Short-term borrowings	26,418	36,908
Long-term borrowings	84,816	89,600
Trust preferred subordinated debt	5,000	5,000
Accrued interest payable	1,447	1,163
Off-balance sheet financial instruments	0	0
Fair Value
Financial assets:
Cash and due from banks	18,403	19,304
Interest-bearing deposits in banks	44,650	15,137
Equity securities with readily determinable fair values	1,767
Debt securities available for sale	152,424	159,051
Investment securities held to maturity	39,145	44,549
Loans held for sale	1,265	1,736
Loans, less allowance for loan losses	1,199,718	1,213,932
Accrued interest receivable	4,368	3,670
Restricted investment in bank stocks	4,849	4,773
Financial liabilities:
Deposits		1,295,456
Demand deposits and savings	981,505
Time deposits	347,307
Short-term borrowings	26,418	36,908
Long-term borrowings	84,567	89,571
Trust preferred subordinated debt	4,694	4,692
Accrued interest payable	1,447	1,163
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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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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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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