Note 3 - Loans and Allowance for Loan Losses (Details) - Allowance for Loan Losses and the Recorded Investment of Loans (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Ending allowance balance attributable to loans:
Individually evaluated for impairment	$ 3,412	$ 2,625
Collectively evaluated for impairment	4,922	3,530
Total ending allowance balance	8,334	6,155	6,905	7,344
Loans:
Loans individually evaluated for impairment	20,169	14,696
Loans collectively evaluated for impairment	574,599	551,623
Total ending loans balance	594,768	566,319
Residential Portfolio Segment [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment		93
Collectively evaluated for impairment	1,426	1,076
Total ending allowance balance	1,426	1,169	1,329	1,860
Loans:
Loans individually evaluated for impairment	1,415	1,019
Loans collectively evaluated for impairment	222,213	218,346
Total ending loans balance	223,628	219,365
Commercial Real Estate Portfolio Segment [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	2,506	1,661
Collectively evaluated for impairment	1,689	1,253
Total ending allowance balance	4,195	2,914	3,946	3,493
Loans:
Loans individually evaluated for impairment	11,711	10,801
Loans collectively evaluated for impairment	165,901	173,070
Total ending loans balance	177,612	183,871
Commercial and Industrial [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	900	864
Collectively evaluated for impairment	702	415
Total ending allowance balance	1,602	1,279	783	636
Loans:
Loans individually evaluated for impairment	6,824	2,658
Loans collectively evaluated for impairment	77,174	58,145
Total ending loans balance	83,998	60,803
Consumer Portfolio Segment [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	6	7
Collectively evaluated for impairment	1,105	786
Total ending allowance balance	1,111	793	847	1,355
Loans:
Loans individually evaluated for impairment	219	218
Loans collectively evaluated for impairment	109,311	102,062
Total ending loans balance	$ 109,530	$ 102,280

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- Definition

A valuation allowance for financing receivables that are expected to be uncollectible.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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-Publisher FASB

-Name Accounting Standards Codification

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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The balance of financing receivables that were collectively evaluated for impairment.

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The balance of financing receivables that were individually evaluated for impairment.

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- Definition

Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

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