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COMMITMENTS, GUARANTEES AND CONTINGENCIES - Schedule of Commitments (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Loss Contingencies [Line Items]    
Unfunded commitment balance of loans sold on a servicing-retained basis $ 1,365,959 $ 1,316,975
Unused consumer portfolio lines    
Loss Contingencies [Line Items]    
Unfunded commitment balance of loans sold on a servicing-retained basis 531,784 405,992
Commercial portfolio lines    
Loss Contingencies [Line Items]    
Unfunded commitment balance of loans sold on a servicing-retained basis 788,108 820,131
Commitments to fund loans    
Loss Contingencies [Line Items]    
Unfunded commitment balance of loans sold on a servicing-retained basis 46,067 90,852
Undisbursed construction loan funds    
Loss Contingencies [Line Items]    
Unfunded commitment balance of loans sold on a servicing-retained basis $ 525,000 $ 584,000