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Note 7 - Loans and Related Allowance for Loan and Lease Losses (Details) - Additional Information on Impaired Loans - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Total:
Average recorded investment	$ 13,504	$ 15,929	$ 13,358	$ 16,760
Interest income recognized	163	205	495	595
Commercial and Industrial [Member]
Total:
Average recorded investment	1,480	1,842	1,354	2,107
Interest income recognized	21	22	73	71
Real Estate Construction Porfolio Segment [Member]
Total:
Average recorded investment	2,347	3,556	2,614	3,644
Interest income recognized	28	38	94	119
Real Estate Mortgage Portfolio Segment [Member] | Residential Loan [Member]
Total:
Average recorded investment	4,195	5,328	4,514	5,319
Interest income recognized	43	62	128	164
Real Estate Mortgage Portfolio Segment [Member] | Commercial Loans [Member]
Total:
Average recorded investment	5,476	5,192	4,871	5,678
Interest income recognized	71	83	200	241
Consumer Portfolio Segment [Member]
Total:
Average recorded investment	$ 6	$ 11	$ 6	$ 12

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Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 310



-SubTopic 10



-Section 50



-Paragraph 15



-Subparagraph (c)(1)



-URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5212-111524



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-Publisher FASB



-Name Accounting Standards Codification



-Topic 310



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-Section 50



-Paragraph 17



-URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5258-111524

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Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

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-Publisher FASB



-Name Accounting Standards Codification



-Topic 310



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