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MORTGAGE SERVICING RIGHTS - Schedule of Expected Amortization of MSRs (Detail) - MSRs - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Future amortization    
Three Months Ending December 31, 2020 $ 37,709  
2021 144,172  
2022 130,781  
2023 117,005  
2024 101,551  
2025 82,806  
Thereafter 191,631  
Net carrying value $ 805,655 $ 718,799