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Mortgage Servicing Rights Summary of Changes in Mortgage Servicing Rights (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Servicing Asset [Abstract]          
Fair value of MSRs $ 49,800   $ 49,800   $ 35,400
Residential Mortgage          
Amortized Cost:          
Balance at beginning of period 35,624 $ 37,803 35,993 $ 38,745  
Originations of MSRs 1,053 1,457 2,407 4,268  
Amortization (1,428) (3,198) (3,151) (6,951)  
Balance at end of period 35,249 36,062 35,249 36,062  
Servicing Asset [Abstract]          
Balance at beginning of period 0 (4,400) (600) (10,500)  
Reduction (addition) to valuation allowance 0 (2,200) 600 3,900  
Balance at end of period 0 (6,600) 0 (6,600)  
Net MSRs at end of period 35,249 29,462 35,249 29,462  
Fair value of MSRs $ 49,804 $ 29,462 $ 49,804 $ 29,462