Note 4 - Loans and Allowance for Loan Losses (Details) - Allowance for Loan Losses Activity by Portfolio Segment (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Allowance for loan losses:
Beginning balance	$ 8,334	$ 6,155
Provision for Loan Losses	(78)	494
Loans charged off	(368)	(466)
Recoveries	432	279
Total ending allowance balance	8,320	6,462
Residential Portfolio Segment [Member]
Allowance for loan losses:
Beginning balance	1,426	1,169
Provision for Loan Losses	31	309
Loans charged off	(97)	(54)
Recoveries	105	13
Total ending allowance balance	1,465	1,437
Commercial Real Estate Portfolio Segment [Member]
Allowance for loan losses:
Beginning balance	4,195	2,914
Provision for Loan Losses	6	57
Loans charged off	(8)	(157)
Recoveries	17	31
Total ending allowance balance	4,210	2,845
Commercial and Industrial [Member]
Allowance for loan losses:
Beginning balance	1,602	1,279
Provision for Loan Losses	14	(19)
Loans charged off	(2)
Recoveries	124	71
Total ending allowance balance	1,738	1,331
Consumer Portfolio Segment [Member]
Allowance for loan losses:
Beginning balance	1,111	793
Provision for Loan Losses	(129)	147
Loans charged off	(261)	(255)
Recoveries	186	164
Total ending allowance balance	$ 907	$ 849

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

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524

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- Definition

Amount of recovery of financing receivables doubtful of collection that were previously charged off.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (c)(4)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524

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- Definition

Amount of direct write-downs of financing receivables charged against the allowance.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (c)(3)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524

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- Definition

Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 11

-Article 9

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-04.11)

-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 11B

-Subparagraph (c)(2)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524

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