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Note 7 - Loans and Related Allowance for Loan and Lease Losses (Details) - Additional Information on Impaired Loans (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
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Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013
Commercial and Industrial [Member] |  |  |  |
Note 7 - Loans and Related Allowance for Loan and Lease Losses (Details) - Additional Information on Impaired Loans [Line Items] |  |  |  |
Impaired Financing Receivable - Average Recorded Investment | $ 2,117 | $ 2,643 | $ 2,140 | $ 2,687
Impaired Financing Receivable - Interest Income Recognized | 12 | 15 | 49 | 70
Real Estate Construction [Member] |  |  |  |
Note 7 - Loans and Related Allowance for Loan and Lease Losses (Details) - Additional Information on Impaired Loans [Line Items] |  |  |  |
Impaired Financing Receivable - Average Recorded Investment | 3,653 | 3,850 | 3,683 | 3,499
Impaired Financing Receivable - Interest Income Recognized | 40 | 58 | 81 | 95
Residential Real Estate Mortgage [Member] |  |  |  |
Note 7 - Loans and Related Allowance for Loan and Lease Losses (Details) - Additional Information on Impaired Loans [Line Items] |  |  |  |
Impaired Financing Receivable - Average Recorded Investment | 5,153 | 5,274 | 5,229 | 4,937
Impaired Financing Receivable - Interest Income Recognized | 45 | 69 | 102 | 143
Commercial Real Estate Mortgage [Member] |  |  |  |
Note 7 - Loans and Related Allowance for Loan and Lease Losses (Details) - Additional Information on Impaired Loans [Line Items] |  |  |  |
Impaired Financing Receivable - Average Recorded Investment | 5,387 | 6,669 | 5,758 | 6,018
Impaired Financing Receivable - Interest Income Recognized | 83 | 106 | 158 | 216
Consumer Installment [Member] |  |  |  |
Note 7 - Loans and Related Allowance for Loan and Lease Losses (Details) - Additional Information on Impaired Loans [Line Items] |  |  |  |
Impaired Financing Receivable - Average Recorded Investment | 14 | 14 | 13 | 18
Impaired Financing Receivable - Interest Income Recognized |  | $ 1 |  | $ 1

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- Definition 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=35738203&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5258-111524 + Details
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- Definition 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. + 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)(2) -URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5212-111524 + Details
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