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Mortgage Servicing Rights Summary of Changes in Mortgage Servicing Rights (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Servicing Asset [Abstract]          
Fair value of MSRs $ 51,100   $ 51,100   $ 35,400
Residential Mortgage          
Amortized Cost:          
Balance at beginning of period 35,249 $ 36,062 35,993 $ 38,745  
Originations of MSRs 1,051 2,637 3,459 6,905  
Amortization (1,360) (2,661) (4,512) (9,612)  
Balance at end of period 34,940 36,038 34,940 36,038  
Servicing Asset [Abstract]          
Balance at beginning of period 0 (6,600) (600) (10,500)  
Reduction (addition) to valuation allowance 0 3,500 600 7,400  
Balance at end of period 0 (3,100) 0 (3,100)  
Net MSRs at end of period 34,940 32,938 34,940 32,938  
Fair value of MSRs $ 51,072 $ 32,938 $ 51,072 $ 32,938