Annual report pursuant to Section 13 and 15(d)

MORTGAGE SERVICING RIGHTS - Summary of Activity of Mortgage Servicing Rights (Details)

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MORTGAGE SERVICING RIGHTS - Summary of Activity of Mortgage Servicing Rights (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Servicing Asset at Amortized Cost, Balance [Roll Forward]    
Balance — beginning of year $ 675,340 $ 446,998
MSRs originated and acquired through acquisitions 246,648 337,273
Sale of subserviced portfolio 0 (7,359)
Changes in fair value:    
Due to collection/realization of cash flows (83,390) (150,954)
Due to changes in valuation model inputs or assumptions 300,941 49,382
Balance — end of year $ 1,139,539 $ 675,340