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Note 7 - Loans (Details) - Impaired Loans and Related Allowance For Credit Losses (USD $) In Thousands, unless otherwise specified | Sep. 30, 2013 | Dec. 31, 2012
--- | --- | ---
With allocated allowance |  |
Allowance | $ 23,362 | $ 12,183
Total impaired loans | 277,280 | 323,786
Total impaired loans | 215,801 | 248,597
Total impaired loans | 23,362 | 12,183
Commercial Loans [Member] |  |
With no allocated allowance |  |
Loans with no related allowance unpaid principal balance | 20,896 | 29,359
Loans with no related allowance recorded investment | 17,699 | 18,963
Real Estate Construction Loans [Member] |  |
With no allocated allowance |  |
Loans with no related allowance unpaid principal balance | 25,438 | 9,304
Loans with no related allowance recorded investment | 15,135 | 7,277
Commercial Mortgage Loans [Member] |  |
With no allocated allowance |  |
Loans with no related allowance unpaid principal balance | 125,489 | 189,871
Loans with no related allowance recorded investment | 94,167 | 152,957
Residential Mortgage And Equity Lines Member |  |
With no allocated allowance |  |
Loans with no related allowance unpaid principal balance | 2,978 | 4,303
Loans with no related allowance recorded investment | 2,969 | 4,229
With No Allocated Allowance Member |  |
With no allocated allowance |  |
Loans with no related allowance unpaid principal balance | 174,801 | 232,837
Loans with no related allowance recorded investment | 129,970 | 183,426
Commercial Loans [Member] |  |
With allocated allowance |  |
Loans with related allowance unpaid principal balance | 22,099 | 7,804
Loans with related allowance recorded investment | 17,352 | 4,959
Allowance | 10,849 | 1,467
Total impaired loans | 10,849 | 1,467
Real Estate Construction Loans [Member] |  |
With allocated allowance |  |
Loans with related allowance unpaid principal balance | 28,847 | 54,718
Loans with related allowance recorded investment | 19,694 | 34,856
Allowance | 5,691 | 8,158
Total impaired loans | 5,691 | 8,158
Commercial Mortgage Loans [Member] |  |
With allocated allowance |  |
Loans with related allowance unpaid principal balance | 35,582 | 14,163
Loans with related allowance recorded investment | 34,688 | 12,928
Allowance | 6,129 | 1,336
Total impaired loans | 6,129 | 1,336
Residential Mortgage And Equity Lines Member |  |
With allocated allowance |  |
Loans with related allowance unpaid principal balance | 15,951 | 14,264
Loans with related allowance recorded investment | 14,097 | 12,428
Allowance | 693 | 1,222
Total impaired loans | 693 | 1,222
With Allocated Allowance Member |  |
With allocated allowance |  |
Loans with related allowance unpaid principal balance | 102,479 | 90,949
Loans with related allowance recorded investment | 85,831 | 65,171
Allowance | 23,362 | 12,183
Total impaired loans | $ 23,362 | $ 12,183

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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=28368275&loc=SL6953550-111524 + Details
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