Note 5 - Loans and Allowance for Loan Losses - Allowance for Loan Losses Activity by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Residential Portfolio Segment [Member]
Balance	$ 906	$ 1,230	$ 1,087	$ 1,426
Provision for loan losses	228	(166)	10	(256)
Loans charged off	(151)	(40)	(322)	(263)
Recoveries	30	219	238	336
Balance	1,013	1,243	1,013	1,243
Commercial Real Estate Portfolio Segment [Member]
Balance	3,464	2,795	1,959	4,195
Provision for loan losses	802	(214)	2,264	(272)
Loans charged off	(11)	(596)	(63)	(1,970)
Recoveries	19	15	114	47
Balance	4,274	2,000	4,274	2,000
Commercial and Industrial Portfolio Segment [Member]
Balance	1,416	2,287	2,589	1,602
Provision for loan losses	149	205	(1,035)	697
Loans charged off	(587)		(587)	(24)
Recoveries	1	11	12	228
Balance	979	2,503	979	2,503
Consumer Portfolio Segment [Member]
Balance	1,148	1,132	1,013	1,111
Provision for loan losses	529	164	1,089	541
Loans charged off	(704)	(309)	(1,540)	(1,016)
Recoveries	298	169	709	520
Balance	1,271	1,156	1,271	1,156
Balance	6,934	7,444	6,648	8,334
Provision for loan losses	1,708	(11)	2,328	710
Loans charged off	(1,453)	(945)	(2,512)	(3,273)
Recoveries	348	414	1,073	1,131
Balance	$ 7,537	$ 6,902	$ 7,537	$ 6,902

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

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Balance Type:	credit
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- Definition

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

+ References

+ Details

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- Definition

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

+ References

+ Details

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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 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524

Reference 2: 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 3: 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=66902209&loc=d3e3602-108585

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