Commitments and Contingent Liabilities - Commitments to Extend Credit, Participations Sold (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Commitments to extend credit
Commitments and Contingent Liabilities
Participations sold to other institutions	$ 48.8	$ 61.8
Standby letters of credit
Commitments and Contingent Liabilities
Participations sold to other institutions	$ 6.3	$ 6.8

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