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Note 7 - Loans and Related Allowance for Loan Losses (Details) - Classes of the Loan Portfolio Summarized by Nonaccrual Loans and Still Accruing - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Note 7 - Loans and Related Allowance for Loan Losses (Details) - Classes of the Loan Portfolio Summarized by Nonaccrual Loans and Still Accruing [Line Items]
Loans, nonacrrual status	$ 7,534	$ 7,545
Loans, 90+ days past due and accruing	67	2
Commercial and Industrial [Member]
Note 7 - Loans and Related Allowance for Loan Losses (Details) - Classes of the Loan Portfolio Summarized by Nonaccrual Loans and Still Accruing [Line Items]
Loans, nonacrrual status	1,058	1,450
Loans, 90+ days past due and accruing	0	0
Real Estate Construction Porfolio Segment [Member]
Note 7 - Loans and Related Allowance for Loan Losses (Details) - Classes of the Loan Portfolio Summarized by Nonaccrual Loans and Still Accruing [Line Items]
Loans, nonacrrual status	118	130
Loans, 90+ days past due and accruing	0	0
Real Estate Mortgage Portfolio Segment [Member] | Residential Loan [Member]
Note 7 - Loans and Related Allowance for Loan Losses (Details) - Classes of the Loan Portfolio Summarized by Nonaccrual Loans and Still Accruing [Line Items]
Loans, nonacrrual status	4,435	4,122
Loans, 90+ days past due and accruing	67	0
Real Estate Mortgage Portfolio Segment [Member] | Commercial Loans [Member]
Note 7 - Loans and Related Allowance for Loan Losses (Details) - Classes of the Loan Portfolio Summarized by Nonaccrual Loans and Still Accruing [Line Items]
Loans, nonacrrual status	1,922	1,842
Loans, 90+ days past due and accruing	0	0
Consumer Portfolio Segment [Member]
Note 7 - Loans and Related Allowance for Loan Losses (Details) - Classes of the Loan Portfolio Summarized by Nonaccrual Loans and Still Accruing [Line Items]
Loans, nonacrrual status	1	1
Loans, 90+ days past due and accruing	$ 0	$ 2

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- References

No definition available.

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- Definition

Recorded investment in financing receivables that are 90 days or more past due and still accruing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Recorded Investment
-URI http://asc.fasb.org/extlink&oid=65880944

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5111-111524

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- Definition

Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Recorded Investment
-URI http://asc.fasb.org/extlink&oid=65880944

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5111-111524

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