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Note 4 - Loans and Allowance for Loan Losses (Details) (USD $) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Sep. 30, 2013 | Dec. 31, 2012
Note 4 - Loans and Allowance for Loan Losses (Details) [Line Items] |  |  |  |  |
Allowance for Loan and Lease Losses, Period Increase (Decrease) | $ (39,000) |  |  | $ (272,000) | $ 2,169,000
Allowance for Loan and Lease Losses, Write-offs | 0 |  |  | 0 | 536,000
Allowance for Loan and Lease Losses, Adjustments, Net |  | 503,000 |  |  |
Proceeds from Recoveries of Loans Previously Charged off |  |  | 275,000 |  |
Change in Troubled Debt Restructurings |  |  |  | 33.90% |
Financing Receivable, Modifications, Recorded Investment | 11,214,000 |  |  | 11,214,000 | 16,954,000
Troubled Debt Payments Recieved |  |  |  | 1,140,000 |
Change In Troubled Debt Restructurings, Payoff Amount |  |  | 300,000 |  |
Impaired Financing Receivable, Related Allowance | 1,494,000 |  |  | 1,494,000 | 1,979,000
Other Commitment | 126,000 |  |  | 126,000 | 109,000
Minimum Loan Balance for Loans Evaluated by Risk Categories | 500,000 |  |  | 500,000 |
Commercial Real Estate [Member] |  |  |  |  |
Note 4 - Loans and Allowance for Loan Losses (Details) [Line Items] |  |  |  |  |
Financing Receivable, Modifications, Recorded Investment |  |  |  |  | 4,222,000
Troubled Debt Restructurings Modified in Current Period [Member] |  |  |  |  |
Note 4 - Loans and Allowance for Loan Losses (Details) [Line Items] |  |  |  |  |
Allowance for Loan and Lease Losses, Period Increase (Decrease) |  |  |  | 7,000 |
Allowance for Loan and Lease Losses, Write-offs |  |  |  | 0 |
Impaired Financing Receivable, Related Allowance | 7,000 |  |  | 7,000 |
Troubled Debt Restructurings [Member] |  |  |  |  |
Note 4 - Loans and Allowance for Loan Losses (Details) [Line Items] |  |  |  |  |
Increase (Decrease) in Other Loans |  |  |  | (5,740,000) |
Impaired Financing Receivable, Related Allowance | $ 1,560,000 |  |  | $ 1,560,000 | $ 2,107,000
Commercial and Industrial [Member] |  |  |  |  |
Note 4 - Loans and Allowance for Loan Losses (Details) [Line Items] |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts |  |  |  | 1 |
Troubled Debt Restructurings Performing According to Modified Terms [Member] |  |  |  |  |
Note 4 - Loans and Allowance for Loan Losses (Details) [Line Items] |  |  |  |  |
Percentage of Loan Portfolio | 89.00% |  |  | 89.00% | 93.00%
Unsecured [Member] |  |  |  |  |
Note 4 - Loans and Allowance for Loan Losses (Details) [Line Items] |  |  |  |  |
Percentage of Loan Portfolio | 5.11% |  |  | 5.11% | 4.87%

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- Definition Amount of other addition (reduction) in allowance reserve for credit loss. + 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 (a) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 Reference 2: 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 3: 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 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 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 Reference 2: 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 3: 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 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 Reference 2: 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 3: 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 Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953676-111524 + Details
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- Definition The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18845-111554 + Details
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- Definition Amount of allowance for credit losses related to recorded investment. + 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 (a)(3) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 + Details
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