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Mortgage Servicing Rights - Narrative (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Jun. 30, 2023
Dec. 31, 2022
Sep. 30, 2022
Jun. 30, 2022
Dec. 31, 2021
Servicing Asset at Amortized Cost [Line Items]            
Mortgage Loans Serviced By For Third Parties $ 4,100,000   $ 4,200,000      
Fair value of MSRs 51,500   50,000      
Residential Mortgage            
Servicing Asset at Amortized Cost [Line Items]            
Fair value of MSRs 51,523     $ 51,072    
Valuation Allowance for Impairment of Recognized Servicing Assets, Balance $ 0 $ 0 $ 0 $ 0 $ 0 $ 600