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Note 8 - Goodwill and Other Intangible Assets (Details Textual) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Number of Reportable Segments | 1 |  |  |
Goodwill, Ending Balance | $ 129,565 | $ 129,565 | $ 129,570 | $ 92,750
Goodwill, Acquired During Period |  |  | 36,820 |
Goodwill Acquired and Disposed During Period, Net | 0 | 0 |  |
Amortization of Intangible Assets, Total | $ 1,446 | $ 1,450 | $ 997 |
Core Deposits [Member] |  |  |  |
Finite-Lived Intangible Assets, Remaining Amortization Period (Year) | 6 years |  |  |
Core Deposits [Member] | Minimum [Member] |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 3 years |  |  |
Core Deposits [Member] | Maximum [Member] |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 8 years |  |  |

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- Definition Represents the net of goodwill acquired and disposed of during period. + References No definition available. + Details
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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