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Note 7 - Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2015
Disclosure Text Block [Abstract] |
Schedule of Intangible Assets and Goodwill [Table Text Block] |
|  | Gross |  |  |  |  |  |  |  |  |  |  | Net |
|  | Intangible |  |  | Additions/ |  |  | Accumulated |  |  | Intangible |
(dollars in thousands) |  | Assets |  |  | (Adjustments) |  |  | Amortization |  |  | Assets |
December 31, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill (1) |  | $ | 104,425 |  |  | $ | (257 | ) |  | $ | - |  |  | $ | 104,168 |
Core deposit (2) |  |  | 7,070 |  |  |  | - |  |  |  | (3,084 | ) |  |  | 3,986 |
Excess servicing (3) |  |  | 282 |  |  |  | 379 |  |  |  | (274 | ) |  |  | 387 |
|  | $ | 111,777 |  |  | $ | 122 |  |  | $ | (3,358 | ) |  | $ | 108,541 |
December 31, 2014 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill (1) |  | $ | 2,163 |  |  | $ | 102,262 |  |  | $ | - |  |  | $ | 104,425 |
Core deposit (2) |  |  | 2,520 |  |  |  | 4,550 |  |  |  | (1,869 | ) |  |  | 5,201 |
Excess servicing (3) |  |  | 865 |  |  |  | 330 |  |  |  | (913 | ) |  |  | 282 |
|  | $ | 5,548 |  |  | $ | 107,142 |  |  | $ | (2,782 | ) |  | $ | 109,908 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] |
Years Ending December 31: |  |  |  |
(dollars in thousands) |  |  |  |
2016 |  | $ | 1,207 |
2017 |  |  | 1,064 |
2018 |  |  | 957 |
2019 |  |  | 715 |
2020 |  |  | 43 |
Thereafter |  |  | - |
Total |  | $ | 3,986 |

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- Definition Tabular disclosure of goodwill and intangible assets, which may be broken down by segment or major class. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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