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Servicing Assets (Narratives) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Jun. 30, 2021
Dec. 31, 2020
Jun. 30, 2020
Dec. 31, 2019
Servicing Assets At Fair Value [Line Items]                
Contractually Specified Servicing Fees Amount $ 988 $ 742 $ 2,460 $ 1,551        
Servicing Assets 48,227 47,242 48,227 47,242 $ 47,712 $ 47,295 $ 47,926 $ 50,779
Conventional Loan [Member]                
Servicing Assets At Fair Value [Line Items]                
Contractually Specified Servicing Fees Amount $ 5,400 $ 4,500 $ 15,900 $ 13,400