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Commitments and Contingencies - Narrative (Details)
$ in Millions
Mar. 31, 2024
USD ($)
letter_of_credit
Dec. 31, 2023
USD ($)
letter_of_credit
Lending-related Commitments    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Reserve for lending related commitments $ 3.6 $ 4.7
Letter of credit | FHLB    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Number of instruments | letter_of_credit 37 31
Maximum borrowing capacity $ 745.0 $ 693.6