Note 11 - Fair Value Measurements - Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Financial assets
Securities available for sale	$ 52,975	$ 52,544
Reported Value Measurement [Member]
Financial assets
Cash and due from banks	18,229	28,745
Federal funds sold	42	1,329
Securities available for sale	52,975	52,544
Restricted equity securities	2,213	2,535
Loans held for sale	678	1,643
Loans, net	415,355	364,060
Bank owned life insurance	7,469	6,285
Accrued income	2,289	2,057
Financial liabilities
Total deposits	450,848	399,546
FHLB borrowings	8,000	22,000
Subordinated notes	7,224	7,194
Other borrowings	1,117	2,361
Accrued interest payable	386	372
Estimate of Fair Value Measurement [Member]
Financial assets
Cash and due from banks	18,239	28,762
Federal funds sold	42	1,329
Securities available for sale	52,975	52,544
Restricted equity securities	2,213	2,535
Loans held for sale	678	1,643
Loans, net	415,039	362,440
Bank owned life insurance	7,469	6,285
Accrued income	2,289	2,057
Financial liabilities
Total deposits	451,385	400,117
FHLB borrowings	8,031	22,191
Subordinated notes	8,012	7,354
Other borrowings	1,117	2,361
Accrued interest payable	386	372
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 1 [Member]
Financial assets
Cash and due from banks	17,479	26,995
Federal funds sold	42	1,329
Securities available for sale
Restricted equity securities
Loans held for sale
Loans, net
Bank owned life insurance
Accrued income
Financial liabilities
Total deposits
FHLB borrowings
Subordinated notes
Other borrowings
Accrued interest payable
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 2 [Member]
Financial assets
Cash and due from banks	760	1,767
Federal funds sold
Securities available for sale	52,975	52,544
Restricted equity securities	2,213	2,535
Loans held for sale	678	1,643
Loans, net
Bank owned life insurance	7,469	6,285
Accrued income	2,289	2,057
Financial liabilities
Total deposits	451,385	400,117
FHLB borrowings	8,031	22,191
Subordinated notes	8,012	7,354
Other borrowings	1,117	2,361
Accrued interest payable	386	372
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 3 [Member]
Financial assets
Cash and due from banks
Federal funds sold
Securities available for sale
Restricted equity securities
Loans held for sale
Loans, net	415,039	362,440
Bank owned life insurance
Accrued income
Financial liabilities
Total deposits
FHLB borrowings
Subordinated notes
Other borrowings
Accrued interest payable

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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The fair value portion of bank owned life insurance.

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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.

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- Definition

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

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-Publisher FASB
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-SubTopic 10
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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.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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-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
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-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
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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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- References

No definition available.

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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

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-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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