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Note 7 - Loans and Realted Allowance for Loan and Lease Losses - Primary Segments of the Loan Portfolio (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Commercial And Industrial [Member]
Individually evaluated for impairment	$ 844	$ 1,808
Collectively evaluated for impairment	58,532	40,728
Total loans	59,376	42,536
Real Estate Construction Porfolio Segment [Member]
Individually evaluated for impairment	1,093	1,787
Collectively evaluated for impairment	16,540	20,350
Total loans	17,633	22,137
Real Estate Mortgage Portfolio Segment [Member] | Residential Loan [Member]
Individually evaluated for impairment	3,238	3,881
Collectively evaluated for impairment	255,714	228,597
Total loans	258,952	232,478
Real Estate Mortgage Portfolio Segment [Member] | Commercial Loans [Member]
Individually evaluated for impairment	6,466	6,199
Collectively evaluated for impairment	239,170	225,502
Total loans	245,636	231,701
Consumer Portfolio Segment [Member]
Individually evaluated for impairment	5	6
Collectively evaluated for impairment	4,727	4,852
Total loans	4,732	4,858
Individually evaluated for impairment	11,646	13,681
Collectively evaluated for impairment	574,683	520,029
Total loans	$ 586,329	$ 533,710

X

- Definition

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

+ 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 (h)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524

+ Details

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Balance Type:	debit
Period Type:	instant

X

- Definition

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

+ 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 (h)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524

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X

- 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=65884687&loc=d3e4428-111522

Reference 2: 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=66008989&loc=d3e5074-111524

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