Note 4 - Loans and Allowance for Loan Losses (Details) - Allowance for Loan Losses Activity by Portfolio Segment - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2016	Mar. 31, 2015
Allowance for loan losses:
Beginning balance	$ 6,648	$ 8,334
Provision for loan losses	479	(78)
Loans charged off	(587)	(368)
Recoveries	406	432
Total ending allowance balance	6,946	8,320
Residential Portfolio Segment [Member]
Allowance for loan losses:
Beginning balance	1,087	1,426
Provision for loan losses	40	31
Loans charged off	(104)	(97)
Recoveries	162	105
Total ending allowance balance	1,185	1,465
Commercial Real Estate Portfolio Segment [Member]
Allowance for loan losses:
Beginning balance	1,959	4,195
Provision for loan losses	17	6
Loans charged off		(8)
Recoveries	19	17
Total ending allowance balance	1,995	4,210
Commercial and Industrial Portfolio Segment [Member]
Allowance for loan losses:
Beginning balance	2,589	1,602
Provision for loan losses	82	14
Loans charged off		(2)
Recoveries	1	124
Total ending allowance balance	2,672	1,738
Consumer Portfolio Segment [Member]
Allowance for loan losses:
Beginning balance	1,013	1,111
Provision for loan losses	340	(129)
Loans charged off	(483)	(261)
Recoveries	224	186
Total ending allowance balance	$ 1,094	$ 907

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

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- Definition

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

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- Definition

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

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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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