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Note 4 - Loans and Related Allowance for Loan Losses (Details) - Classes of the Loan Portfolio Summarized by Nonaccrual Loans and Still Accruing - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
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Note 4 - 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 | $ 7,545 | $ 7,347
Loans, 90+ days past due and accruing | 2 | 165
Commercial and Industrial [Member] |  |
Note 4 - 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 | 1,450 | 365
Loans, 90+ days past due and accruing | 0 | 0
Real Estate Construction Porfolio Segment [Member] |  |
Note 4 - 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 | 130 | 587
Loans, 90+ days past due and accruing | 0 | 0
Real Estate Mortgage Portfolio Segment [Member] | Residential Loan [Member] |  |
Note 4 - 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 | 4,122 | 5,310
Loans, 90+ days past due and accruing | 0 | 165
Real Estate Mortgage Portfolio Segment [Member] | Commercial Loans [Member] |  |
Note 4 - 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 | 1,842 | 1,083
Loans, 90+ days past due and accruing | 0 | 0
Consumer Portfolio Segment [Member] |  |
Note 4 - 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 | 2
Loans, 90+ days past due and accruing | $ 2 | $ 0

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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 -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5111-111524 + Details
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