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Note 6 - Goodwill and Intangibles - Goodwill by Reportable Segment (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | --- | --- | ---
Segment Reporting Information [Line Items] |  |  |  |
Goodwill | $ 74,748 | $ 77,832 | $ 28,334 | $ 13,111
SFC Bank |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Goodwill | 45,975 | 45,975 |  |
Other Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Goodwill | 682 | 3,766 |  |
Commercial Banking | QCBT |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Goodwill | 3,223 | 3,223 | 3,223 |
Commercial Banking | CRBT |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Goodwill | 14,980 | 14,980 | 15,223 |
Commercial Banking | CSB |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Goodwill | 9,888 | 9,888 | $ 9,888 |
Commercial Banking | SFC Bank |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Goodwill | $ 45,975 | $ 45,975 |  |

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
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