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Premises and Equipment - Narrative (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Mar. 31, 2023
Dec. 31, 2022
Leases [Abstract]    
Lease liability $ 14.8 $ 15.0
Right-of-use asset 13.7  
Operating lease, right of use asset 13.6 $ 13.9
Finance lease, right-of-use asset $ 0.1  
Operating lease, weighted average remaining lease term (in years) 11 years 3 months 18 days 11 years 7 months 6 days
Operating lease, weighted average discount rate, (as a percentage) 3.00% 3.00%
Finance lease, weighted average remaining lease term (in years) 2 years 6 months  
Finance lease, weighted average discount rate, (as a percentage) 0.70%  
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration] Accrued interest payable and other liabilities Accrued interest payable and other liabilities
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration] Accrued interest payable and other liabilities Accrued interest payable and other liabilities
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Accrued interest receivable and other assets Accrued interest receivable and other assets