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Note 7 - Loans and Related Allowance for Loan Losses (Details) - Primary Segments of the Loan Portfolio - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Loans:
Individually evaluated for impairment	$ 15,647	$ 13,681
Collectively evaluated for impairment	514,709	520,029
Total loans	530,356	533,710
Commercial and Industrial [Member]
Loans:
Individually evaluated for impairment	865	1,808
Collectively evaluated for impairment	46,571	40,728
Total loans	47,436	42,536
Real Estate Construction Porfolio Segment [Member]
Loans:
Individually evaluated for impairment	1,453	1,787
Collectively evaluated for impairment	19,552	20,350
Total loans	21,005	22,137
Real Estate Mortgage Portfolio Segment [Member] | Residential Loan [Member]
Loans:
Individually evaluated for impairment	4,085	3,881
Collectively evaluated for impairment	234,404	228,597
Total loans	238,489	232,478
Real Estate Mortgage Portfolio Segment [Member] | Commercial Loans [Member]
Loans:
Individually evaluated for impairment	9,239	6,199
Collectively evaluated for impairment	209,124	225,502
Total loans	218,363	231,701
Consumer Portfolio Segment [Member]
Loans:
Individually evaluated for impairment	5	6
Collectively evaluated for impairment	5,058	4,852
Total loans	$ 5,063	$ 4,858

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- References

No definition available.

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- 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

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- 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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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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