Note 21 - Fair Value of Financial Instruments - Schedule of Estimated Fair Value and Related Carrying or Notional Amounts of Company's Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Investment securities available-for-sale, at fair value	$ 181,910	$ 198,843
Investment securities held-to-maturity	25,508	32,184
Reported Value Measurement [Member]
Cash and cash equivalents	23,530	44,072
Investment securities available-for-sale, at fair value	181,910	198,843
Investment securities held-to-maturity	25,904	32,359
Federal Home Loan Bank stock	1,581	1,025
Loans, net of allowance for loan losses	322,772	255,432
Other assets - derivatives	346	3
Deposits	497,556	479,258
Short-term borrowings	10,119	7,354
Long-term borrowings	15,000	5,000
Estimate of Fair Value Measurement [Member]
Cash and cash equivalents	23,530	44,072
Investment securities available-for-sale, at fair value	181,910	198,843
Investment securities held-to-maturity	25,508	32,184
Federal Home Loan Bank stock	1,581	1,025
Loans, net of allowance for loan losses	319,881	256,392
Other assets - derivatives	346	3
Deposits	497,037	478,833
Short-term borrowings	10,119	7,352
Long-term borrowings	14,998	4,977
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 1 [Member]
Cash and cash equivalents	23,530	44,072
Investment securities available-for-sale, at fair value
Investment securities held-to-maturity
Federal Home Loan Bank stock
Loans, net of allowance for loan losses
Other assets - derivatives
Deposits
Short-term borrowings
Long-term borrowings
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 2 [Member]
Cash and cash equivalents
Investment securities available-for-sale, at fair value	181,910	198,843
Investment securities held-to-maturity	25,508	32,184
Federal Home Loan Bank stock
Loans, net of allowance for loan losses
Other assets - derivatives	346	3
Deposits	497,037	478,833
Short-term borrowings	10,119	7,352
Long-term borrowings	14,998	4,977
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 3 [Member]
Cash and cash equivalents
Investment securities available-for-sale, at fair value
Investment securities held-to-maturity
Federal Home Loan Bank stock	1,581	1,025
Loans, net of allowance for loan losses	319,881	256,392
Other assets - derivatives
Deposits
Short-term borrowings
Long-term borrowings

Amount of debt 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.

+ References

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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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Fair value of the assets less the liabilities of a derivative or group of derivatives.

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

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Fair value portion of investments in Federal Home Loan Bank (FHLBank) stock.

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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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