Annual report pursuant to Section 13 and 15(d)

MORTGAGE SERVICING RIGHTS - Summary of Impact of Adverse Changes on Prepayment Speeds, Discount Rate and Cost to Service at Two Different Data Points (Details)

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MORTGAGE SERVICING RIGHTS - Summary of Impact of Adverse Changes on Prepayment Speeds, Discount Rate and Cost to Service at Two Different Data Points (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Transfers and Servicing [Abstract]    
Mortgage servicing rights, Prepayment Speeds 10% Adverse Change $ (36,298) $ (35,704)
Mortgage servicing rights, Prepayment Speeds 20% Adverse Change (70,878) (69,207)
Mortgage servicing rights, Discount Rates 10% Adverse Change (50,392) (23,135)
Mortgage servicing rights, Discount Rates 20% Adverse Change (96,848) (45,139)
Mortgage servicing rights, Cost to Service (per loan) 10% Adverse Change (11,880) (7,875)
Mortgage servicing rights, Cost to Service (per loan) 20% Adverse Change $ (24,162) $ (16,288)