Note 4 - Loans and Allowance for Loan Losses (Details) - Past Due Loans (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	$ 3,797	$ 5,614
60-89 Days Past Due	803	853
90 or More Days Past Due	9,232	5,197
Total Past Due	13,832	11,664
Loans Not Past Due	580,685	583,104
Total	594,517	594,768
Residential Real Estate Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	1,997	3,337
60-89 Days Past Due	493	612
90 or More Days Past Due	3,406	3,489
Total Past Due	5,896	7,438
Loans Not Past Due	215,414	216,190
Total	221,310	223,628
Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	227	74
60-89 Days Past Due		62
90 or More Days Past Due	781	1,422
Total Past Due	1,008	1,558
Loans Not Past Due	78,039	77,290
Total	79,047	78,848
Commercial Real Estate Nonowner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	323
90 or More Days Past Due	3,988
Total Past Due	4,311
Loans Not Past Due	67,848	71,229
Total	72,159	71,229
Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due		932
60-89 Days Past Due	69
90 or More Days Past Due	769
Total Past Due	838	932
Loans Not Past Due	25,149	26,603
Total	25,987	27,535
Commercial and Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	256
60-89 Days Past Due		10
90 or More Days Past Due	21	24
Total Past Due	277	34
Loans Not Past Due	89,170	83,964
Total	89,447	83,998
Automobile Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	516	616
60-89 Days Past Due	162	149
90 or More Days Past Due	49	33
Total Past Due	727	798
Loans Not Past Due	42,295	42,051
Total	43,022	42,849
Home Equity Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	26
90 or More Days Past Due	149	103
Total Past Due	175	103
Loans Not Past Due	19,023	18,188
Total	19,198	18,291
Other Consumer Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	452	655
60-89 Days Past Due	79	20
90 or More Days Past Due	69	126
Total Past Due	600	801
Loans Not Past Due	43,747	47,589
Total	$ 44,347	$ 48,390

Financing receivables that are less than 60 days past due but more than 29 days past due.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 7A

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953401-111524

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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.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5074-111524

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