v3.25.4
SERVICING - Schedules of Geographic Concentration of the Loans (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items]    
UPB of Underlying Loans $ 12,930,483 $ 8,096,883
% of Total 100.00% 100.00%
California | Concentration Risk    
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items]    
UPB of Underlying Loans $ 3,239,619 $ 2,146,371
California | Concentration Risk | Loans Underlying Servicing Assets    
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items]    
% of Total 25.10% 26.50%
Florida | Concentration Risk    
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items]    
UPB of Underlying Loans $ 1,553,217 $ 990,404
Florida | Concentration Risk | Loans Underlying Servicing Assets    
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items]    
% of Total 12.00% 12.20%
Arizona | Concentration Risk    
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items]    
UPB of Underlying Loans $ 634,623 $ 429,469
Arizona | Concentration Risk | Loans Underlying Servicing Assets    
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items]    
% of Total 4.90% 5.30%
Georgia | Concentration Risk    
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items]    
UPB of Underlying Loans $ 579,494 $ 407,651
Georgia | Concentration Risk | Loans Underlying Servicing Assets    
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items]    
% of Total 4.50% 5.00%
Washington | Concentration Risk    
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items]    
UPB of Underlying Loans $ 490,630 $ 362,370
Washington | Concentration Risk | Loans Underlying Servicing Assets    
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items]    
% of Total 3.80% 4.50%
New Jersey | Concentration Risk    
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items]    
UPB of Underlying Loans $ 455,704 $ 320,124
New Jersey | Concentration Risk | Loans Underlying Servicing Assets    
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items]    
% of Total 3.50% 4.00%
Ohio | Concentration Risk    
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items]    
UPB of Underlying Loans $ 414,065 $ 227,069
Ohio | Concentration Risk | Loans Underlying Servicing Assets    
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items]    
% of Total 3.20% 2.80%
Virginia | Concentration Risk    
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items]    
UPB of Underlying Loans $ 413,862 $ 239,559
Virginia | Concentration Risk | Loans Underlying Servicing Assets    
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items]    
% of Total 3.20% 3.00%
North Carolina | Concentration Risk    
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items]    
UPB of Underlying Loans $ 358,185 $ 261,013
North Carolina | Concentration Risk | Loans Underlying Servicing Assets    
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items]    
% of Total 2.80% 3.20%
Colorado | Concentration Risk    
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items]    
UPB of Underlying Loans $ 338,515 $ 241,844
Colorado | Concentration Risk | Loans Underlying Servicing Assets    
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items]    
% of Total 2.60% 3.00%
Other | Concentration Risk    
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items]    
UPB of Underlying Loans $ 4,452,569 $ 2,471,009
Other | Concentration Risk | Loans Underlying Servicing Assets    
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items]    
% of Total 34.40% 30.50%