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Servicing Assets (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Servicing Assets at Fair Value [Line Items]        
Fair value of servicing asset $ 48,973 $ 47,295 $ 50,779 $ 10,716
Servicing fees on mortgage loans 3,256 2,485 1,367  
Conventional Mortgage Loan        
Servicing Assets at Fair Value [Line Items]        
Servicing fees on mortgage loans $ 21,400 $ 17,200 $ 4,200