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Note 5 - Loans - Portfolio by Risk Rating (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Loans | $ 11,201,275 | $ 10,163,452
Loans held for sale | 7,500 | 6,676
Commercial Portfolio Segment [Member] |  |
Loans | 2,248,187 | 2,316,863
Real Estate Construction Portfolio Segment [Member] |  |
Loans | 548,088 | 441,543
Commercial Real Estate Portfolio Segment [Member] |  |
Loans | 5,785,248 | 5,301,218
Residential Mortgage and Equity Lines Portfolio Segment [Member] |  |
Loans | 2,615,759 | 2,101,335
Consumer Portfolio Segment [Member] |  |
Loans | 3,993 | 2,493
Pass [Member] |  |
Loans | 10,513,473 | 9,669,161
Loans held for sale |  | 732
Pass [Member] | Commercial Portfolio Segment [Member] |  |
Loans | 2,023,114 | 2,143,270
Pass [Member] | Real Estate Construction Portfolio Segment [Member] |  |
Loans | 469,909 | 413,765
Pass [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Loans | 5,410,623 | 5,018,199
Pass [Member] | Residential Mortgage and Equity Lines Portfolio Segment [Member] |  |
Loans | 2,605,834 | 2,091,434
Pass [Member] | Consumer Portfolio Segment [Member] |  |
Loans | 3,993 | 2,493
Special Mention [Member] |  |
Loans | 435,032 | 272,066
Loans held for sale |  |
Special Mention [Member] | Commercial Portfolio Segment [Member] |  |
Loans | 140,682 | 110,338
Special Mention [Member] | Real Estate Construction Portfolio Segment [Member] |  |
Loans | 44,129 | 5,776
Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Loans | 250,221 | 155,553
Special Mention [Member] | Residential Mortgage and Equity Lines Portfolio Segment [Member] |  |
Loans |  | 399
Special Mention [Member] | Consumer Portfolio Segment [Member] |  |
Loans |  |
Substandard [Member] |  |
Loans | 252,672 | 210,497
Loans held for sale | 7,500 | 5,944
Substandard [Member] | Commercial Portfolio Segment [Member] |  |
Loans | 84,293 | 61,297
Substandard [Member] | Real Estate Construction Portfolio Segment [Member] |  |
Loans | 34,050 | 21,502
Substandard [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Loans | 124,404 | 118,196
Substandard [Member] | Residential Mortgage and Equity Lines Portfolio Segment [Member] |  |
Loans | 9,925 | 9,502
Substandard [Member] | Consumer Portfolio Segment [Member] |  |
Loans |  |
Doubtful [Member] |  |
Loans | 98 | 11,728
Loans held for sale |  |
Doubtful [Member] | Commercial Portfolio Segment [Member] |  |
Loans | 98 | 1,958
Doubtful [Member] | Real Estate Construction Portfolio Segment [Member] |  |
Loans |  | 500
Doubtful [Member] | Commercial Real Estate Portfolio Segment [Member] |  |
Loans |  | 9,270
Doubtful [Member] | Residential Mortgage and Equity Lines Portfolio Segment [Member] |  |
Loans |  |
Doubtful [Member] | Consumer Portfolio Segment [Member] |  |
Loans |  |

X
- Definition Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=65884687&loc=d3e4428-111522 + Details
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X
- Definition Amount, after allowance for bad debt, of loan receivables held-for-sale that are not part of a disposal group. Excludes loans and leases covered under loss sharing agreements and loans classified as debt securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=65884687&loc=d3e4428-111522 + Details
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