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Note 5 - Core Deposit and Customer List Intangible Assets (Details Textual) - USD ($) $ in Millions | Mar. 07, 2022 | May 31, 2021 | May 01, 2019 | Dec. 31, 2013
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Core Deposits [Member] | Commonwealth [Member] |  |  |  |
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived | $ 13 |  |  |
Core Deposits [Member] | Kentucky Bancshares [Member] |  |  |  |
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived |  | $ 4 |  |
Core Deposits [Member] | King Bancorp Inc. [Member] |  |  |  |
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived |  |  | $ 2 |
Core Deposits [Member] | THE BANCorp [Member] |  |  |  |
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived |  |  |  | $ 3
Customer Lists [Member] | Commonwealth [Member] |  |  |  |
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived | $ 14 |  |  |

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- Definition Amount of identifiable finite-lived intangible asset acquired in business combination and recognized at acquisition date. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 805 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479907/805-20-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 805 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479907/805-20-50-1 + Details
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