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Note 4 - Loans and Allowance for Loan Losses (Details) (USD $) | 6 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2013 | Dec. 31, 2012 | Mar. 31, 2013
Note 4 - Loans and Allowance for Loan Losses (Details) [Line Items] |  |  |
Allowance for Loan and Lease Losses, Write-offs | $ 513 | $ 536,000 |
Allowance for Loan and Lease Losses, Period Increase (Decrease) | 233,000 | 2,169,000 |
Allowance for Loan and Lease Losses, Adjustments, Net | 503 |  |
Proceeds from Recoveries of Loans Previously Charged off | 275,000 |  |
Change in Troubled Debt Restructurings |  | 34.10% |
Financing Receivable, Modifications, Recorded Investment | 11,178,000 | 16,954,000 |
Troubled Debt Payments Recieved | 995 |  |
Change In Troubled Debt Restructurings, Payoff Amount |  |  | 300
Impaired Financing Receivable, Related Allowance | 878 | 1,979,000 |
Other Commitment |  | 109,000 | 724,000
Minimum Loan Balance for Loans Evaluated by Risk Categories | 500,000 |  |
Commercial Real Estate [Member] |  |  |
Note 4 - Loans and Allowance for Loan Losses (Details) [Line Items] |  |  |
Financing Receivable, Modifications, Recorded Investment |  | 4,222 |
Troubled Debt Restructurings [Member] |  |  |
Note 4 - Loans and Allowance for Loan Losses (Details) [Line Items] |  |  |
Increase (Decrease) in Other Loans | 5,776,000 |  |
Impaired Financing Receivable, Related Allowance |  | $ 2,107,000 | $ 1,599,000
Commercial and Industrial [Member] |  |  |
Note 4 - Loans and Allowance for Loan Losses (Details) [Line Items] |  |  |
Financing Receivable, Modifications, Number of Contracts | 1 |  |
Unsecured [Member] |  |  |
Note 4 - Loans and Allowance for Loan Losses (Details) [Line Items] |  |  |
Percentage of Loan Portfolio | 5.14% | 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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