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Note 4 - Loans and Allowance for Loan Losses (Details) (USD $) In Thousands, unless otherwise specified | 6 Months Ended | 12 Months Ended | 3 Months Ended |  |  | 6 Months Ended |  | 6 Months Ended |  |  | 6 Months Ended |
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Jun. 30, 2014 | Jun. 30, 2013 | Dec. 31, 2013 | Jun. 30, 2014 Short-Term Interest Only-Payments [Member] Commercial and Industrial [Member] | Jun. 30, 2014 Extended at Interest Rate Lower Than Current Market Rate [Member] Commercial Real Estate Loans [Member] | Jun. 30, 2014 Troubled Debt Restructurings Performing According to Modified Terms [Member] | Dec. 31, 2013 Troubled Debt Restructurings Performing According to Modified Terms [Member] | Jun. 30, 2014 Troubled Debt Restructurings [Member] | Dec. 31, 2013 Troubled Debt Restructurings [Member] | Jun. 30, 2014 Commercial and Industrial [Member] | Mar. 31, 2014 Unsecured [Member] | Dec. 31, 2013 Unsecured [Member] | Jun. 30, 2014 Troubled Debt Restructurings [Member] | Jun. 30, 2013 Troubled Debt Restructurings [Member] | Dec. 31, 2013 Troubled Debt Restructurings [Member]
Note 4 - Loans and Allowance for Loan Losses (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for Loan and Lease Losses, Period Increase (Decrease) | $ (194) |  | $ (321) |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 |
Allowance for Loan and Lease Losses, Write-offs | 0 |  | 0 |  |  |  |  |  |  |  |  |  |  |  |
Provision for Loan and Lease Losses Increase (Decrease) |  |  | (871) |  |  |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Other Loans |  |  |  |  |  |  |  | 3,839 |  |  |  |  |  |  |
Change in Troubled Debt Restructurings | 30.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts |  |  |  | 2 | 1 |  |  |  |  | 3 |  |  |  |  |
Financing Receivable, Modifications, Recorded Investment | 16,445 |  | 12,606 | 3,621 | 767 |  |  |  |  | 4,388 |  |  |  |  |
Percentage of Loan Portfolio |  |  |  |  |  | 98.00% | 98.00% |  |  |  | 5.28% | 5.13% |  |  |
Impaired Financing Receivable, Related Allowance | 2,337 |  | 2,625 |  |  |  |  | 1,317 | 1,511 |  |  |  | 0 | 0 |
Loans and Leases Receivable, Impaired, Commitment to Lend |  |  |  |  |  |  |  |  |  |  |  |  | 1,975 |  | 718
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | 0 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum Loan Balance for Loans Evaluated by Risk Categories | $ 500 |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Amount of increase (decrease) of allowance reserve for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Subparagraph d -Article 9 + Details
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- Definition Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Subparagraph d -Article 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524 + Details
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