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Note 7 - Loans (Details) - Average Balance and Interest Income Recognized Related to Impaired Loans (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2014 | Mar. 31, 2013
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans - Average Recorded Investment | $ 195,365 | $ 244,248
Impaired Loans - Interest Income Recognized | 1,520 | 1,895
Commercial Loans [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans - Average Recorded Investment | 30,844 | 22,126
Impaired Loans - Interest Income Recognized | 226 | 183
Real Estate Construction Loans [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans - Average Recorded Investment | 34,060 | 42,068
Impaired Loans - Interest Income Recognized | 65 | 66
Commercial Mortgage Loans [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans - Average Recorded Investment | 111,305 | 162,257
Impaired Loans - Interest Income Recognized | 1,134 | 1,562
Residential Mortgage And Equity Lines Member |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans - Average Recorded Investment | 19,156 | 17,797
Impaired Loans - Interest Income Recognized | $ 95 | $ 84

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- Definition Average 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 15 -Subparagraph (c)(1) -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 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5258-111524 + Details
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- Definition Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired. + 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 (c)(2) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 + Details
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