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Note 7 - Loans (Details) - Impaired Loans and Related Allowance for Credit Losses (USD $) In Thousands, unless otherwise specified | Sep. 30, 2014 | Dec. 31, 2013
--- | --- | ---
With allocated allowance |  |
Allowance | $ 13,814 | $ 13,284
Total impaired loans | 215,509 | 263,848
Total impaired loans | 188,347 | 200,780
Total impaired loans | 13,814 | 13,284
Commercial Loans [Member] |  |
With allocated allowance |  |
Loans with related allowance, unpaid principal balance | 8,951 | 22,737
Loans with related allowance, recorded investment | 6,985 | 13,063
Allowance | 2,730 | 2,519
Total impaired loans | 2,730 | 2,519
Real Estate Construction Loans [Member] |  |
With allocated allowance |  |
Loans with related allowance, unpaid principal balance | 15,377 | 28,475
Loans with related allowance, recorded investment | 15,377 | 19,323
Allowance | 2,604 | 3,460
Total impaired loans | 2,604 | 3,460
Commercial Mortgage Loans [Member] |  |
With allocated allowance |  |
Loans with related allowance, unpaid principal balance | 33,749 | 39,223
Loans with related allowance, recorded investment | 32,973 | 35,613
Allowance | 7,999 | 6,584
Total impaired loans | 7,999 | 6,584
Residential Mortgage And Equity Lines Member |  |
With allocated allowance |  |
Loans with related allowance, unpaid principal balance | 13,422 | 16,535
Loans with related allowance, recorded investment | 12,988 | 14,957
Allowance | 481 | 721
Total impaired loans | 481 | 721
With Allocated Allowance Member |  |
With allocated allowance |  |
Loans with related allowance, unpaid principal balance | 71,499 | 106,970
Loans with related allowance, recorded investment | 68,323 | 82,956
Allowance | 13,814 | 13,284
Total impaired loans | 13,814 | 13,284
Commercial Loans [Member] |  |
With no allocated allowance |  |
Loans with no related allowance, unpaid principal balance | 19,792 | 20,992
Loans with no related allowance, recorded investment | 18,764 | 18,905
Real Estate Construction Loans [Member] |  |
With no allocated allowance |  |
Loans with no related allowance, unpaid principal balance | 37,403 | 25,401
Loans with no related allowance, recorded investment | 16,133 | 15,097
Commercial Mortgage Loans [Member] |  |
With no allocated allowance |  |
Loans with no related allowance, unpaid principal balance | 84,274 | 105,593
Loans with no related allowance, recorded investment | 82,586 | 78,930
Residential Mortgage And Equity Lines Member |  |
With no allocated allowance |  |
Loans with no related allowance, unpaid principal balance | 2,541 | 4,892
Loans with no related allowance, recorded investment | 2,541 | 4,892
With No Allocated Allowance Member |  |
With no allocated allowance |  |
Loans with no related allowance, unpaid principal balance | 144,010 | 156,878
Loans with no related allowance, recorded investment | $ 120,024 | $ 117,824

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- Definition 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 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953550-111524 + 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=35738203&loc=d3e5212-111524 + Details
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