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MORTGAGE SERVICING RIGHTS - Schedule of Activity Related to MSRs (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
MORTGAGE SERVICING RIGHTS    
Beginning balance $ 852,399  
Ending balance 808,145 $ 852,399
MSRs    
MORTGAGE SERVICING RIGHTS    
Beginning balance 852,399 907,415
Additions, following the sale of loan 178,136 156,984
Amortization (210,536) (203,600)
Pre-payments and write-offs (11,854) (8,400)
Ending balance $ 808,145 $ 852,399