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Note 7 - Loans (Details) - Troubled Debt Restructurings Modified (USD $) | 12 Months Ended |  | 6 Months Ended | 3 Months Ended | 6 Months Ended
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Jun. 30, 2013 | Dec. 31, 2012 | Jun. 30, 2013 Commercial Loans Member Accruing Troubled Debt Restructuring Member | Jun. 30, 2012 Commercial Loans Member Accruing Troubled Debt Restructuring Member | Jun. 30, 2013 Commercial Mortgage Loans [Member] Accruing Troubled Debt Restructuring Member | Jun. 30, 2012 Commercial Mortgage Loans [Member] Accruing Troubled Debt Restructuring Member | Jun. 30, 2013 Residential Mortgage Loans [Member] Accruing Troubled Debt Restructuring Member | Jun. 30, 2012 Residential Mortgage Loans [Member] Accruing Troubled Debt Restructuring Member | Jun. 30, 2013 Total [Member] Accruing Troubled Debt Restructuring Member | Jun. 30, 2012 Total [Member] Accruing Troubled Debt Restructuring Member | Jun. 30, 2013 Accruing Troubled Debt Restructuring Member | Jun. 30, 2012 Accruing Troubled Debt Restructuring Member | Jun. 30, 2013 Accruing Troubled Debt Restructuring Member | Jun. 30, 2012 Accruing Troubled Debt Restructuring Member
Note 7 - Loans (Details) - Troubled Debt Restructurings Modified [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
No. of Loans |  |  | 4 | 5 | 2 | 12 | 10 | 3 | 16 | 20 |  |  |  |
Pre-Modification Recorded Investment |  |  | $ 4,006,000 | $ 1,988,000 | $ 1,175,000 | $ 44,619,000 | $ 3,459,000 | $ 1,802,000 | $ 8,640,000 | $ 48,409,000 |  |  |  |
Post-Modification Recorded Investment |  |  | 4,006,000 | 1,988,000 | 1,175,000 | 40,940,000 | 3,381,000 | 1,802,000 | 8,562,000 | 44,730,000 |  |  |  |
Charge-offs | 254,000 |  |  | 0 | 0 | 3,679,000 | 78,000 | 0 | 78,000 | 3,679,000 | (78,000) | 0 | (78,000) | 0
Specific Reserve | $ 12,779,000 | $ 12,183,000 | $ 55,000 | $ 60,000 | $ 9,000 | $ 0 | $ 155,000 | $ 14,000 | $ 219,000 | $ 74,000 |  |  |  |

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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 Post-modification amount of investment in financing receivables 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 Pre-modification amount of investment in financing receivables 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 Reflects the amount of the write-down related to a troubled debt restructuring. + 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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