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Commitments and Contingent Liabilities (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
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Commitments to Extend Credit |  |
Loss Contingencies [Line Items] |  |
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability | $ 2,800.0 | $ 2,670.0
Standby Letters of Credit |  |
Loss Contingencies [Line Items] |  |
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Liability | $ 29.9 | $ 25.7

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- Definition The fair value of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13433-108611 + Details
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