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Note 7 - Loans And Related Allowance For Loan Losses (Details) - Troubled Debt Restructurings That Subsequently Defaulted During Current Quarter (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
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Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012
Commercial and Industrial [Member] |  |  |
Note 7 - Loans And Related Allowance For Loan Losses (Details) - Troubled Debt Restructurings That Subsequently Defaulted During Current Quarter [Line Items] |  |  |
Troubled Debt Restructurings Subsequently Defaulted Number of Contracts | 1 | 1 | 2
Troubled Debt Restructurings Subsequently Defaulted Recorded Investment (in Dollars) | $ 30 | $ 565 | $ 60
Residential Real Estate Mortgage [Member] |  |  |
Note 7 - Loans And Related Allowance For Loan Losses (Details) - Troubled Debt Restructurings That Subsequently Defaulted During Current Quarter [Line Items] |  |  |
Troubled Debt Restructurings Subsequently Defaulted Number of Contracts | 1 |  | 1
Troubled Debt Restructurings Subsequently Defaulted Recorded Investment (in Dollars) | $ 20 |  | $ 20

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- Definition Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953682-111524 + Details
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- Definition Amount of investment related to financing receivables modified by troubled debt restructurings within the previous 12 months, for which there was a payment default. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953682-111524 + Details
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