v3.25.4
SERVICING - Schedule of Servicing Assets (Details)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2025
USD ($)
loan
Sep. 30, 2024
USD ($)
loan
Dec. 31, 2024
USD ($)
loan
Dec. 31, 2023
USD ($)
loan
Dec. 31, 2022
USD ($)
Contractually Specified Servicing Fees, Late Fees, and Ancillary Fees Earned in Exchange for Servicing Financial Assets [Line Items]          
UPB of Underlying Loans $ 11,298,223   $ 8,096,883 $ 5,195,599  
Loan Count | loan 302,339   113,707 75,294  
Carrying value $ 100,000 $ 74,440 $ 88,497 $ 55,860 $ 33,777
HELOC loans | Servicing Assets          
Contractually Specified Servicing Fees, Late Fees, and Ancillary Fees Earned in Exchange for Servicing Financial Assets [Line Items]          
UPB of Underlying Loans 11,148,741   $ 7,933,975 $ 5,018,260  
Loan Count | loan   302,066 113,413 74,980  
Carrying value 98,120   $ 86,465 $ 53,645  
Mortgage loans | Servicing Assets          
Contractually Specified Servicing Fees, Late Fees, and Ancillary Fees Earned in Exchange for Servicing Financial Assets [Line Items]          
UPB of Underlying Loans 149,482   $ 162,908 $ 177,339  
Loan Count | loan   273 294 314  
Carrying value $ 1,880   $ 2,032 $ 2,215