Note 7 - Fair Value of Financial Instruments - Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financial Assets:
Securities	$ 186,149	$ 198,342
Other Equity Securities	8,595	6,120
Fair Value, Inputs, Level 1 [Member]
Financial Assets:
Securities
Fair Value, Inputs, Level 2 [Member]
Financial Assets:
Securities	186,149	198,342
Fair Value, Inputs, Level 3 [Member]
Financial Assets:
Securities
Reported Value Measurement [Member]
Financial Assets:
Cash and Short-Term Investments	39,181	44,729
Securities	186,149	198,342
Mortgage Loans Held for Sale	332	180
Loans - Net	928,535	802,789
Cash Value of BOLI	23,039	22,567
Other Equity Securities	8,595	6,120
Total	1,185,831	1,074,727
Financial Liabilities:
Deposits	1,015,094	932,795
Borrowings	71,962	53,646
Total	1,087,056	986,441
Estimate of Fair Value Measurement [Member]
Financial Assets:
Cash and Short-Term Investments	39,181	44,729
Securities	186,149	198,342
Mortgage Loans Held for Sale	332	180
Loans - Net	914,658	796,400
Cash Value of BOLI	23,039	22,567
Other Equity Securities	8,595	6,120
Total	1,171,954	1,068,338
Financial Liabilities:
Deposits	1,010,560	912,702
Borrowings	72,270	53,706
Total	1,082,830	966,408
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 1 [Member]
Financial Assets:
Cash and Short-Term Investments	39,181	44,729
Securities
Mortgage Loans Held for Sale
Loans - Net
Cash Value of BOLI
Other Equity Securities
Total	39,181	44,729
Financial Liabilities:
Deposits
Borrowings
Total
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 2 [Member]
Financial Assets:
Cash and Short-Term Investments
Securities	186,149	198,342
Mortgage Loans Held for Sale	332	180
Loans - Net
Cash Value of BOLI	23,039	22,567
Other Equity Securities
Total	209,520	221,089
Financial Liabilities:
Deposits
Borrowings	72,270	53,706
Total	72,270	53,706
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 3 [Member]
Financial Assets:
Cash and Short-Term Investments
Securities
Mortgage Loans Held for Sale
Loans - Net	914,658	796,400
Cash Value of BOLI
Other Equity Securities	8,595	6,120
Total	923,253	802,520
Financial Liabilities:
Deposits	1,010,560	912,702
Borrowings
Total	$ 1,010,560	$ 912,702

Represents the fair value portion of other equity securities.

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Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
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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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No definition available.

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- Definition

Fair value portion of the amount that could be realized under a life insurance contract or contracts owned by the entity, commonly known as corporate-owned life insurance (COLI) or bank-owned life insurance (BOLI).

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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
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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 financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-URI http://asc.fasb.org/subtopic&trid=2196772

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Fair value portion of mortgage loans held-for-sale.

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