Note 7 - Fair Value Measurement - Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Reported Value Measurement [Member]
Cash and due from banks	$ 28,101	$ 28,745
Federal funds sold	954	1,329
Securities available-for-sale	54,498	52,544
Restricted equity securities	2,479	2,535
Loans held for sale	915	1,643
Loans, net	390,219	364,060
Bank owned life insurance	6,371	6,285
Accrued income	2,071	2,057
Total deposits	433,275	399,546
FHLB borrowings	14,650	22,000
Subordinated notes	7,209	7,194
Other borrowings	896	2,361
Accrued interest payable	411	372
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 1 [Member]
Cash and due from banks	26,351	26,995
Federal funds sold	954	1,329
Securities available-for-sale
Restricted equity securities
Loans held for sale
Loans, net
Bank owned life insurance
Accrued income
Total deposits
FHLB borrowings
Subordinated notes
Other borrowings
Accrued interest payable
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 2 [Member]
Cash and due from banks	1,757	1,767
Federal funds sold
Securities available-for-sale	54,498	52,544
Restricted equity securities	2,479	2,535
Loans held for sale	915	1,643
Loans, net
Bank owned life insurance	6,371	6,285
Accrued income	2,071	2,057
Total deposits	433,602	400,117
FHLB borrowings	14,789	22,191
Subordinated notes	7,651	7,354
Other borrowings	896	2,361
Accrued interest payable	411	372
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 3 [Member]
Cash and due from banks
Federal funds sold
Securities available-for-sale
Restricted equity securities
Loans held for sale
Loans, net	393,924	362,440
Bank owned life insurance
Accrued income
Total deposits
FHLB borrowings
Subordinated notes
Other borrowings
Accrued interest payable
Estimate of Fair Value Measurement [Member]
Cash and due from banks	28,108	28,762
Federal funds sold	954	1,329
Securities available-for-sale	54,498	52,544
Restricted equity securities	2,479	2,535
Loans held for sale	915	1,643
Loans, net	393,924	362,440
Bank owned life insurance	6,371	6,285
Accrued income	2,071	2,057
Total deposits	433,602	400,117
FHLB borrowings	14,789	22,191
Subordinated notes	7,651	7,354
Other borrowings	896	2,361
Accrued interest payable	411	372
Securities available-for-sale	$ 54,498	$ 52,544

The fair value portion of accrued income.

No definition available.

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- Definition

The fair value portion of accrued interest payable.

+ References

No definition available.

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- Definition

The fair value portion of bank owned life insurance.

+ References

No definition available.

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- Definition

Fair value portion of cash on hand (currency and coin), cash items in process of collection, noninterest bearing deposits due from other financial institutions (including corporate credit unions), and noninterest bearing balances with the Federal Reserve Banks, Federal Home Loan Banks and central banks.

+ References

No definition available.

+ Details

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- Definition

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
-SubTopic 10
-Section 25
-Paragraph 1
-Subparagraph (b)
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- Definition

The carrying amount of securities categorized neither as held-to-maturity nor trading which serve as security for borrowings or other arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 10
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-03(f))
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- Definition

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.

+ References

No definition available.

+ Details

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- Definition

Fair value of subordinated debt obligations including, but not limited to, subordinated loan, subordinated bond, subordinated debenture or junior debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
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- Definition

Fair value portion of federal funds sold and securities borrowed or purchased under agreements to resell.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
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-Paragraph 1
-Subparagraph (SX 210.9-03.13(3)(a))
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- Definition

Fair value portion of borrowing from Federal Home Loan Bank (FHLBank).

+ References

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- Definition

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

+ References

No definition available.

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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
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Glossary Loan
-URI http://asc.fasb.org/extlink&oid=6517073

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- Definition

Fair value portion of other liabilities.

+ References

No definition available.

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