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Note 22 - Regulatory Matters (Tables) | 12 Months Ended
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Dec. 31, 2016
Notes Tables |
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block] |
|  | Company |  |  | Bank |  |  |  |  |  |  | To Be Well Capitalized Under |
|  | Actual |  |  | Actual |  |  | Minimum Required For |  |  | Prompt Corrective Action |
(dollars in thousands) |  | Amount |  |  | Ratio |  |  | Amount |  |  | Ratio |  |  | Capital Adequacy Purposes |  |  | Regulations * |
As of December 31, 2016 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
CET1 capital (to risk weighted aseets) |  | $ | 737,512 |  |  |  | 10.80 | % |  | $ | 854,226 |  |  |  | 12.55 | % |  |  | 5.125 | % |  |  | 6.5 | %
Total capital (to risk weighted assets) |  |  | 1,016,712 |  |  |  | 14.89 | % |  |  | 913,100 |  |  |  | 13.41 | % |  |  | 8.625 | % |  |  | 10.0 | %
Tier 1 capital (to risk weighted assets) |  |  | 737,512 |  |  |  | 10.80 | % |  |  | 854,226 |  |  |  | 12.55 | % |  |  | 6.625 | % |  |  | 8.0 | %
Tier 1 capital (to average assets) |  |  | 737,512 |  |  |  | 10.72 | % |  |  | 854,226 |  |  |  | 12.44 | % |  |  | 5.000 | % |  |  | 5.0 | %
As of December 31, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
CET1 capital (to risk weighted assets) |  | $ | 632,408 |  |  |  | 10.68 | % |  | $ | 620,879 |  |  |  | 10.52 | % |  |  | 4.50 | % |  |  | 6.5 | %
Total capital (to risk weighted assets) |  |  | 755,212 |  |  |  | 12.75 | % |  |  | 673,442 |  |  |  | 11.41 | % |  |  | 8.00 | % |  |  | 10.0 | %
Tier 1 capital (to risk weighted assets) |  |  | 632,408 |  |  |  | 10.68 | % |  |  | 620,879 |  |  |  | 10.52 | % |  |  | 6.00 | % |  |  | 8.0 | %
Tier 1 capital (to average assets) |  |  | 632,408 |  |  |  | 10.90 | % |  |  | 620,879 |  |  |  | 10.74 | % |  |  | 4.00 | % |  |  | 5.0 | %

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- Definition Tabular disclosure of the capital amounts and ratios as of the balance sheet date, indicating whether the entity or entities are in compliance with regulatory capital requirements, by entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958570-112826 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958568-112826 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1H -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=35709795&loc=d3e65071-112826 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1G -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958577-112826 + Details
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